ZIP Code 55366 in New Auburn, MN

Data Last Updated: March 1, 2026
City:New Auburn, Minnesota
County:Sibley County
Timezone:Central (GMT -06:00)
Local Time:7:36:49 AM
Population:373 [See All]
Area Codes:507 / 924
Classification:PO Box
Coordinates:44.6483, -94.2114
Land Area:0.478 sq mi
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55366 New Auburn, MN - Rural Minnesota Post Office Town

ZIP Code 55366, New Auburn

Small Town
LocationSibley County, MN
Area0.4 sq mi
Population373
Households161
PO Boxes145 (90% adoption)
Median Age42.4 years
ZIP CreatedBefore Oct 2004
Key Facts
  • New Auburn is a PO Box Only Zone, meaning there's no alternative mail delivery for residents in this area.
  • With 145 PO Boxes serving 161 households, about 90% of homes receive their mail at the post office.
  • One rural carrier route operates from this post office, serving farms and homes in the surrounding countryside.
  • The village covers less than half a square mile with a simple numbered street grid typical of small Minnesota towns.
  • 24% of workers here work from home, higher than the national average.
  • Median home values sit at $142,000 with 76% owner-occupancy, indicating a stable residential community.

Community Overview

New Auburn sits in Sibley County, Minnesota, a small farming community of 373 people spread across less than half a square mile. It's a PO Box Only Zone. There's no alternative mail delivery here, so nearly every household relies on the post office. With 145 PO Boxes serving 161 households, 90% of homes receive mail through a box at the New Auburn post office.

Postal Services

Despite the PO Box classification, USPS does operate one rural carrier route from this location. That route serves addresses in the surrounding farmland, but the village itself depends on PO Boxes. General delivery is also available for those without a permanent box.

Local Character

The street grid is simple: numbered streets crossing numbered avenues, from 1st Street to 5th Street, from 3rd Avenue to 9th Avenue. No fancy names, just a practical Midwestern layout. Most residents own their homes (76%), and there's virtually no rental turnover or seasonal housing.

Demographics

New Auburn is a working community. Median household income runs $70,000, and homes sell for around $142,000. The median age of 42 puts it squarely in middle-age territory. A notable 24% of workers do their jobs from home, likely commuting electronically to jobs in the Minneapolis metro area about 60 miles east.

The Post Office as Community Hub

The post office here isn't just a place to pick up mail. In a town with only 8 business establishments and 22 employees, it's one of the few public gathering spots. Residents stop by regularly, and for many, collecting the mail is part of the daily routine.

Street Name Patterns

Numbered Grid

Simple numbered grid typical of small Midwestern towns, with avenues running one direction and streets the other.

Interactive charts load automatically as you scroll. Hover for data, click to explore trends, and use the menu to export.

Population & Demographics


ZIP Code 55366 has 373 residents and 161 households (average 2.32 persons per household). The median age is 42.4 years, older than the state (38.4) and older than the nation (38.8). The gender split is 55.8% male and 44.2% female, which is higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (89.3%, much higher than the state average of 77.5% and well above the national average of 61.6%) and Hispanic or Latino (7.8%); Hispanic or Latino residents make up 7.8%, which is much lower than the national average (18.7%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2024 American Community Survey (ACS) 5-Year Estimates.
2020 Population:373Source: Census DHC
2024 ACS Population Estimate:423Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:780.3 people per sq mile
Average Income:$72,500Source: Census ACS
Households:161Source: Census DHC
Average House Value:$158,300Source: Census ACS
Persons Per Household:2.32Source: Census DHC
Average Family Size:2.87Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--567598537518492439522541526484489460441423
Decennial Census443------------------373--------
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

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


Median Age: 42.4

Male Median Age: 43

Female Median Age: 41.3

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male9131812611101417718282282454
Female96171087121381116171573231
Total18193522141822272518344537155685
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:33389.76%
Black:30.81%
Hispanic:*297.82%
Asian:00%
American Indian:20.54%
Hawaiian:00%
Other:41.08%
Total:371100%
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.

Gender Breakdown


GenderCount%Median Age
Males:20855.76%43.0 years
Females:16544.24%41.3 years
Total:373100%42.4 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:37287.94%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:122.84%
Foreign born, not a U.S. citizen:3912.06%
Total Population:423100%
Total Native Population:37287.94%
Total Foreign-born Population:5112.06%
Source: U.S. Census 2020-2024 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


In 2024, the Median household income is $72,500, which is well under the national median ($80,734), is up $28,594 (65.1%) since 2011 and above its 2019 pre-pandemic level by $40,154. Family households earn a median of $101,250 versus $36,250 for nonfamily households (a difference of $65,000). By gender, male median income is $61,000 and female is $47,824, which is considerably lower than the national female median ($55,274), with a current gap of $13,176 that has widened from 2011 to 2024. The labor-force participation rate is 77.1%, which is markedly above the national rate (63.5%). The unemployment rate is 6.1%, which is notably higher than the national rate (5.2%). The largest occupation group is Production (35.8%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

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


Income Type20112012201320142015201620172018201920202021202220232024
Median Household Income$43,906$39,688$36,875$46,250$44,464$36,250$31,989$32,089$32,346$34,750$46,250$65,278$70,000$72,500
Median Family Income$51,406$49,583$50,750$55,625$52,750$51,563$33,750$39,000$38,125$38,500$51,429$80,500$84,125$101,250
Median NonFamily Income$15,694$15,714$8,942$16,250$0$28,250$24,688$26,250$26,563$26,000$27,188$29,167$30,417$36,250
Median Male Income$34,911$34,408$40,089$39,250$38,929$38,676$32,183$32,083$32,346$32,813$40,375$45,682$47,750$61,000
Median Female Income$28,269$30,125$26,719$27,500$30,139$26,964$33,750$38,393$42,708$41,010$41,146$45,909$47,557$47,824
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:24672.35%
Unemployed:164.71%
Not In Labor Force:7822.94%
Total:340100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

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


Management, business, science, and arts:7329.67%
Service:4116.67%
Sales and Office:218.54%
Natural resources, construction, and maintenance:239.35%
Production, transportation, and material moving:8835.77%
Total Civilian Employed Population:246100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2024, the median home value is $158,300, which is well under the national median ($332,700), is up $42,900 (37.18%) since 2011 and above its 2019 pre-pandemic level by $63,900. The median gross rent is $738, which is considerably lower than the national median ($1,413), is up $155 (26.59%) since 2011 and above its 2019 pre-pandemic level by $118. Of occupied housing, owners make up 79.55% (54.29% with a mortgage, 45.71% free-and-clear) and renters 20.45% - making this ZIP Code under national rental averages. The vacancy rate is 6.88%, which is considerably lower than the national rate (10.12%).

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Home Value$115,400$92,500$84,800$87,400$83,900$78,600$75,600$85,800$94,400$106,100$111,900$124,700$142,000$158,300
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:1850.00%
$1,000 to $1,499:25.56%
$1,500 to $1,999:00.00%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:1644.44%
Total:36100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Rent$583$593$425$500$506$539$528$581$620$598$598$646$775$738
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):7643.18%
Owner Occupied (free and clear, no mortgage):6436.36%
Renter Occupied:3620.45%
Total Occupied Housing Units:176100%

Occupied Housing Units:17693.12%
Vacant Housing Units (not graphed):136.88%
Total Housing Units:189100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:14476.19%
Multi-Family Units:157.94%
Other Units:3015.87%
Total Housing Units:189100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2024, 12.70% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 92.20%, which is comparable to the national rate (89.60%). The uninsured rate is 8.00%, which is comparable to the national rate (8.40%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.80%), down 18.00 percentage points since 2011. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is elementary (72.73%). College enrollment is 10.23%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:175.54%
9th to 12th grade, no diploma:72.28%
High school graduate (includes equivalency):13343.32%
Some college, no degree:6320.52%
Associate's degree:4815.64%
Bachelor's degree:309.77%
Graduate or professional degree:92.93%
Total:307100%
High school or higher:28392.18%
Bachelor's degree or higher:3912.70%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

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


Private Insurance:26152.30%
Public Insurance:20440.88%
No Insurance:346.81%
Total:499100%
Has Health Insurance:46593.19%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

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


Group20112102201320142015201620172018201920202021202220232024
% of People in Poverty18.0%16.3%12.3%7.4%6.6%4.6%2.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%
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.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00.00%
Kindergarten:910.23%
Elementary school (grades 1-8):6472.73%
High school (grades 9-12):66.82%
College or graduate school:910.23%
Total:88100%
Early Childhood:910.23%
K-12 (Primary & Secondary School):7989.77%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 55366 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 15 people with an annual payroll of $634,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:421Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:6Source: CBP
1st Quarter Payroll:$121,000Source: CBP
Annual Payroll:$634,000Source: CBP
# of Employees:15Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 55366 is located in Sibley County, Minnesota, within the Metropolitan Statistical Area (CBSA ) and Minnesota's 7th Congressional District. This area has a population of 0 people, about 0.00% of whom live in ZIP Code 55366. It covers 0.478 sq mi of land and a water area of 0 sq mi.

CBSA Name:--Source: Census
CBSA Number:--Source: Census
CBSA Type:--Source: Census
CBSA Division:--Source: Census
CBSA Population:0Source: Census
MSA:Source: Census
Land Area:0.478 sq miSource: Census
Water Area:--Source: Census
Congressional District:07Source: USPS
Congressional Land Area:33429.31 sq miSource: Census
PMSA:Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:2745376Source: Census
Place Name:New Auburn city; MinnesotaSource: Census

Adjacent & Nearby ZIP Codes


55367 | | 55364

Schools in ZIP Code 55366


We could not locate which school district 55366 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Sibley East-Gaylord Elementary 625 Harvey Drive
Gaylord, MN 55334
District: Sibley East School DistrictNearby
Sibley East Middle School 202 3rd Avenue Nw
Arlington, MN 55307
District: Sibley East School DistrictNearby
Sibley East-Arlington Senior High 202 3rd Ave Nw
Arlington, MN 55307
District: Sibley East School DistrictNearby
Lincoln Elementary 1621 16th St E
Glencoe, MN 55336
District: Glencoe-Silver Lake School DistrictNearby
Gsl Junior High School 1621 16th St E
Glencoe, MN 55336
District: Glencoe-Silver Lake School DistrictNearby
Immanuel Lutheran School 417 High Ave
Gaylord, MN 55334
District: Private SchoolNearby
St Pauls Lutheran School 510 W Adams St
Arlington, MN 55307
District: Private SchoolNearby
First Lutheran School 1015 14th St E
Glencoe, MN 55336
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 55366


Gustavus Adolphus College 800 West College Avenue
Saint Peter, MN 56082-1498
Type: Post Secondary
Martin Luther College 1995 Luther Ct
New Ulm, MN 56073-3965
Type: Post Secondary
Crown College 8700 College View Drive
Saint Bonifacius, MN 55375-9001
Type: Post Secondary
South Central College 1920 Lee Blvd
North Mankato, MN 56003-1920
Type: Post Secondary
Bethany Lutheran College 700 Luther Dr
Mankato, MN 56001
Type: Post Secondary
Rasmussen University-Mankato 1400 Madison Avenue
Mankato, MN 56001-5476
Type: Post Secondary

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 March 1, 2026.

  1. U.S. Postal Service [Last Updated: 3/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 3/1/2026], https://www.zip-codes.com
  3. 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 (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 3/1/2026], https://nces.ed.gov