Side Lake, MN ZIP Code, Map and Demographics

55781 is the only ZIP Code for Side Lake, MN

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Data Last Updated: June 1, 2026

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ZIP Code:	55781 (Standard)
County:	Saint Louis County, MN
Area Code:	218
Time Zone:	Central (GMT -06:00)
Local Time:	12:00:00 AM
Population:	728 (ZIP Codes) [More Demographics]
Statistical Area:	Duluth, MN-WI [Learn More]
Coordinates:	47.6734, -93.0618
Land Area:	81.43 sq miles (ZIP Code)
Quick Link:	https://www.zip-codes.com/city/mn-side-lake.asp

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Side Lake, MN has 1 ZIP Code

ZIP Code	Type	PopulationPop	% of Population% of Pop	Alias Names
55781	Standard	728	100.00%

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Population & Demographics

Data labeled as "All ZIP Codes" is a total (or average) for every ZIP Code with Side Lake, MN assigned by the USPS. The U.S. Postal Service provides a name (and aliases) for every ZIP Code which can include cities, towns, villages, and other incorporated names.

There is currently no matching U.S. Census Place for this geographic area. Many rural areas may have such low population density that they will not be part of any U.S. Census Place.

Total Population:	728
Total Households:	351
Total Housing Units:	815
Average Household Size:	2.07
Average Family Size:	2.72

All ZIP Codes assigned this City name by the USPS.

Population Over Time (with 2010 & 2020 Census Benchmarks)

Line chart of All ZIPs in Side Lake, MN population estimates from 2011-2024, with markers for the 2010 and 2020 Decennial Census counts to show growth or decline over time. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Group	2010	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Census ACS Population Estimate	--	578	565	536	611	689	672	687	756	724	778	774	822	847
Decennial Census	734	--	--	--	--	--	--	--	--	--	728	--	--	--

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)

Median Age: 60.7

Male Median Age: 62.2

Female Median Age: 58.8

Line Chart showing the population by Age Group and Gender of all ZIPs in Side Lake, Minnesota. One line shows the Total population in that age group, another line shows the Male population for that age group, and the last line shows the Female population for the given age group. A table also provides the same information. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Group	< 5	5-9	10-14	15-19	20-24	25-29	30-34	35-39	40-44	45-49	50-54	55-59	60-64	65-69	70-74	75-79	80-84	85+
Male	4	8	12	13	11	13	13	12	17	18	28	22	50	67	41	25	7	9
Female	13	12	13	18	6	16	7	10	27	19	17	28	45	62	36	15	6	8
Total	17	20	25	31	17	29	20	22	44	37	45	50	95	129	77	40	13	17

Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Pie Chart & Table (ZIPs)Comparison Chart

Population by Race

Pie Chart showing Population by Race for all ZIPs in Side Lake, Minnesota. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

White:	711	98.61%
Black:	0	0%
Hispanic:*	6	0.83%
Asian:	1	0.14%
American Indian:	1	0.14%
Hawaiian:	0	0%
Other:	2	0.28%
Total:	721	100%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Pie Chart & Table (ZIPs)Comparison Chart

Gender Breakdown

Pie chart showing Male vs Demale share of the population. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Gender	Count	Percentage	Median Age
Males:	370	50.82%	62.2 years
Females:	358	49.18%	58.8 years
Total:	728	100%	60.7 years

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Pie Chart & Table (ZIPs)

Nativity & Citizenship

Pie chart showing Nativity/Citizenship for all ZIPs in Side Lake, MN. Categories include native residents (born in the United States, Puerto Rico, U.S. Island Areas, or abroad to American parents) and foreign-born residents. A table below lists counts and percentages. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Native, born in the United States:	842	99.41%
Native, born in PR, Island Areas, or abroad:	4	0.47%
Foreign born, naturalized U.S. citizen:	1	0.12%
Foreign born, not a U.S. citizen:	0	0.12%
Total Population:	847	100%
Total Native Population:	846	99.88%
Total Foreign-born Population:	1	0.12%

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment

Median Income Over Time (Household, Family, Nonfamily, Male, Female)

Line Chart showing Median Income Estimates from 2011 until 2024 of Median Household Income, Median Family Income, Median Nonfamily Income, Median Male Income, and Median Female Income for all ZIPs in Side Lake, Minnesota. A table also provides the same information. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Income Type	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Median Household Income	$58,036	$54,375	$58,750	$55,313	$56,875	$64,375	$65,000	$54,167	$62,188	$65,750	$66,875	$72,500	$95,536
Median Family Income	$84,432	$74,063	$72,292	$70,781	$68,125	$73,661	$76,875	$68,125	$75,104	$80,750	$82,222	$85,500	$101,174
Median NonFamily Income	$25,833	$26,146	$27,500	$31,750	$31,944	$36,375	$36,125	$38,472	$39,844	$41,875	$44,167	$39,500	$41,667
Median Male Income	$66,719	$61,875	$63,906	$65,000	$65,536	$65,750	$73,125	$62,679	$73,750	$71,094	$73,700	$78,942	$83,527
Median Female Income	$31,250	$40,179	$41,719	$41,406	$41,875	$42,344	$50,833	$46,875	$64,583	$60,750	$62,500	$47,396	$71,250

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income

Bar Chart showing Average Household Income for all ZIPs in Side Lake, MN, the U.S. Census Place, Saint Louis County, the state of Minnesota, and the United States National Average. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Source: U.S. Census 2019-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Pie Chart & Table (ZIPs)Comparison Chart

Employment Status

Employment status for all ZIPs in Side Lake, MN: employed, unemployed, and not in the labor force. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Employed:	274	35.26%
Unemployed:	20	2.57%
Not In Labor Force:	483	62.16%
Total:	777	100%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Pie Chart & Table (ZIPs)

Employment by Occupation (Civilian Employed Population, 16 and Over)

Donut Chart showing the distribution of employed civilians aged 16 and over by occupation category: management, service, sales and office, natural resources and construction, and production and transportation. A table with the same data and percentages is provided as well.Load Chart Manually (if needed)

Management, business, science, and arts:	154	56.20%
Service:	28	10.22%
Sales and Office:	35	12.77%
Natural resources, construction, and maintenance:	24	8.76%
Production, transportation, and material moving:	33	12.04%
Total Civilian Employed Population:	274	100%

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability

Median Home Value (Comparison)

Bar Chart showing median House Value for all ZIPs in Side Lake, Minnesota, the U.S. Census Place, Saint Louis County, Minnesota, and the United States National Average. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Median Home Value Over Time (2011-2024)

Line chart showing median home values for ZIP across years 2011-2024 using ACS 5-year estimates. The chart displays the typical dollar value of owner-occupied housing units. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Group	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Median Home Value	$309,300	$317,100	$294,500	$291,300	$301,500	$295,700	$289,200	$309,100	$311,200	$297,200	$307,400	$339,000	$366,400

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Pie Chart & Table (ZIPs)

Gross Rent Paid

Pie Chart showing Gross Rent Paid by renters for all ZIPs in Side Lake, MN. A table also provides the same information. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Less than $500:	0	0.00%
$500 to $999:	3	18.75%
$1,000 to $1,499:	2	12.50%
$1,500 to $1,999:	1	6.25%
$2,000 to $2,499:	0	0.00%
$2,500 to $2,999:	0	0.00%
$3,000 or more:	0	0.00%
No Rent:	10	62.50%
Total:	16	100%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time (2011-2024)

Line chart displaying median gross rent for ZIP over the years 2011-2024 using ACS 5-year estimates. The chart represents typical monthly housing costs for renter households. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Group	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Median Rent	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$1,313	$0

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Pie Chart & Table (ZIPs)

Housing Occupancy

Pie chart showing housing occupancy for in Side Lake, MN. Categories include owner-occupied units with a mortgage, owner-occupied units free and clear, and renter-occupied units. A table below lists counts and percentages. Vacant housing units are shown separately in the Vacancy table. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Owner Occupied (with mortgage):	129	37.18%
Owner Occupied (free and clear, no mortgage):	202	58.21%
Renter Occupied:	16	4.61%
Total Occupied Housing Units:	347	100%

Occupied Housing Units:	347	39.98%
Vacant Housing Units (not graphed):	521	60.02%
Total Housing Units:	868	100%

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community

Pie Chart & Table (ZIPs)

Educational Attainment of Adults (25 and Older)

Pie chart of educational attainment for adults (25+) for all ZIPs in Side Lake, MN, including each level from less than 9th grade to graduate/professional. Summary rows show high school or higher and bachelor's or higher. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Less than 9th grade:	4	0.61%
9th to 12th grade, no diploma:	4	0.61%
High school graduate (includes equivalency):	140	21.28%
Some college, no degree:	108	16.41%
Associate's degree:	143	21.73%
Bachelor's degree:	195	29.64%
Graduate or professional degree:	64	9.73%
Total:	658	100%
High school graduate or higher:	650	98.78%
Bachelor's degree or higher:	259	39.36%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Pie Chart & Table (ZIPs)Comparison Chart

Health Insurance Coverage by Type (Private, Public, Uninsured)

Pie chart illustrating health insurance coverage by type for Side Lake, MN. Categories include private insurance, public coverage such as Medicare and Medicaid, and individuals with no health insurance. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Private Insurance:	750	63.88%
Public Insurance:	415	35.35%
No Insurance:	9	0.77%
Total:	1,174	100%
Has Health Insurance:	1,165	99.23%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)

Line chart displaying the share of families and people in All ZIPs of Side Lake MN whose income falls below the federal poverty threshold, using ACS 5-year estimates from 2011 through 2024. The chart shows year-to-year changes in the percentage of people in poverty. Chart loads automatically and replaces this content. Load Chart Manually (if needed)

Group	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
% of People in Poverty	1.6%	3.3%	1.7%	1.4%	5.5%	7.3%	6.0%	7.8%	10.2%	6.8%	9.2%	7.1%	3.7%

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

Pie Chart & Table (ZIPs)

School Enrollment by Education Level (Ages 3 and Older)

Pie Chart showing enrollment of residents ages 3 and older in Nursery School or Preschool, Kindergarten, Elementary (grades 1-8), High School (grades 9-12), and College or Graduate School for all ZIPS in Side Lake, MN.Load Chart Manually (if needed)

Nursery School, Preschool:	3	2.14%
Kindergarten:	1	0.71%
Elementary school (grades 1-8):	44	31.43%
High school (grades 9-12):	77	55.00%
College or graduate school:	15	10.71%
Total:	140	100%
Early Childhood:	4	2.86%
K-12 (Primary & Secondary School):	122	87.14%

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics

Side Lake supports both business and residential activity. According to the Business Census (2024), there are 7 business establishments, employing about 37 people with an annual payroll of $865,000. USPS data shows 222 residential mailboxes and 5 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:	222Source: USPS
# Business Mailboxes:	5Source: USPS
Total Delivery Receptacles:	486Source: USPS
Single Family Delivery Units:	221Source: USPS
Multi Family Delivery Units:	0Source: USPS

# of Businesses:	7Source: CBP
1st Quarter Payroll:	$141,000Source: CBP
Annual Payroll:	$865,000Source: CBP
# of Employees:	37Source: CBP

All ZIP Codes assigned this City name by the USPS.

Geography, Land Area, and Statistical Classifications

Side Lake, MN is located in Saint Louis County, within the Duluth, MN-WI Metropolitan Statistical Area (CBSA 20260) and Minnesota's 1st Congressional District. This Metro area has a population of 280,710 people, about 0.3% of whom live in Side Lake. ZIP Codes here cover 81.425 sq mi of land and a water area of 5.278 sq mi.

CBSA Name:	Duluth, MN-WISource: Census
CBSA Number:	20260Source: Census
CBSA Type:	MetroSource: Census
CBSA Division:	--Source: Census
CBSA Population:	280,710Source: Census
MSA:	Duluth-Superior, MN-WI MSASource: Census
PMSA:	--Source: Census

Land Area:	81.425 sq miSource: Census
Water Area:	5.278 sq miSource: Census
Congressional District(s):	08Source: USPS
Intro Date:	< 2004-10Source: ZIP-Codes.com
Place FIPS Code:	--Source: Census
Place Name:	--Source: Census

Sum of all ZIP Codes assigned this City name by the USPS.

Adjacent & Nearby Cities from Side Lake, MN

Chisholm, MN~12.0 miles
Cook, MN~13.0 miles
Nashwauk, MN~13.4 miles
Angora, MN~15.0 miles
Kinney, MN~18.3 miles
Britt, MN~18.6 miles
Mountain Iron, MN~21.6 miles
Bovey, MN~22.6 miles
Hibbing, MN~22.7 miles
Bigfork, MN~22.7 miles
Pengilly, MN~25.2 miles
Effie, MN~26.0 miles
Iron, MN~26.7 miles
Marcell, MN~27.4 miles
Virginia, MN~29.4 miles
Forbes, MN~32.7 miles
Goodland, MN~33.1 miles
Gilbert, MN~34.1 miles
Talmoon, MN~34.3 miles
Orr, MN~34.4 miles

Sources & References

Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on June 1, 2026.

U.S. Postal Service [Last Updated: 6/1/2026], https://www.usps.com
ZIP-Codes.com Proprietary Data Enhancements [Updated: 6/1/2026], https://www.zip-codes.com
U.S. Census [Updated: Varies], https://www.census.gov
- U.S. Census Office of Management and Budget [Updated: As Released]
- U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
- U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
- U.S. Census Business Patterns [Annually] [Updated: Annually, As Released]
- U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
National Center for Education Statistics [Updated: 6/1/2026], https://nces.ed.gov

The ZIP Code, Map and Demographics of Side Lake, MN

55781 is the only ZIP Code for Side Lake, MN

Side Lake, MN has 1 ZIP Code

Population & Demographics

Population Over Time (with 2010 & 2020 Census Benchmarks)

Population by Age & Gender (Total, Male, Female)

Population by Race

Gender Breakdown

Nativity & Citizenship

Income & Employment

Median Income Over Time (Household, Family, Nonfamily, Male, Female)

Average Household Income

Employment Status

Employment by Occupation (Civilian Employed Population, 16 and Over)

Housing & Affordability

Median Home Value (Comparison)

Median Home Value Over Time (2011-2024)

Gross Rent Paid

Median Gross Rent Over Time (2011-2024)

Housing Occupancy

Education, Health & Community

Educational Attainment of Adults (25 and Older)

Health Insurance Coverage by Type (Private, Public, Uninsured)

Percentage of People in Poverty Over Time (2011-2024)

School Enrollment by Education Level (Ages 3 and Older)

Business & Employment Statistics

Geography, Land Area, and Statistical Classifications

Adjacent & Nearby Cities from Side Lake, MN

Sources & References