ZIP Code 53178 in Sullivan, WI

Data Last Updated: October 1, 2025
City:Sullivan, Wisconsin
Counties:Jefferson County[Primary]
Waukesha County
Timezone:Central (GMT -06:00)
Local Time:7:44:52 PM
Population:2,703 [See All]
Area Code:262
Classification:Standard [Normal Street Delivery]
Coordinates:43.0260, -88.6025
Land Area:31.862 sq mi
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https://www.zip-codes.com/zip-code/53178/zip-code-53178.asp

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Population & Demographics


ZIP Code 53178 has 2,703 residents and 1,168 households (average 2.31 persons per household). The median age is 48.3 years, significantly older than the state (40.1) and significantly older than the nation (38.8). The gender split is 51.8% male and 48.2% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (93.8%, much higher than the state average of 80.4% and well above the national average of 61.6%) and Hispanic or Latino (2.7%); Hispanic or Latino residents make up 2.7%, 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 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:2,703Source: Census DHC
2023 ACS Population Estimate:2,741Source: Census ACS
2025 ZC Population Estimate:2,677Source: ZIP-Codes.com
Population Density:84.8 people per sq mile
Average Income:$94,522Source: Census ACS
Households:1,168Source: Census DHC
Average House Value:$337,800Source: Census ACS
Persons Per Household:2.31Source: Census DHC
Average Family Size:2.84Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--2,7302,7112,7502,6512,6642,7392,8102,7382,7552,5522,6432,7492,741
Decennial Census2,626------------------2,703------
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: 48.3

Male Median Age: 47.3

Female Median Age: 49.5

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male5483877748619579898511314013010964462613
Female576461555070828576651041411177891523521
Total11114714813298131177164165150217281247187155986134
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:2,53695.41%
Black:140.53%
Hispanic:*722.71%
Asian:70.26%
American Indian:70.26%
Hawaiian:00%
Other:220.83%
Total:2,658100%
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:1,39951.76%47.3 years
Females:1,30448.24%49.5 years
Total:2,703100%48.3 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:2,70898.80%
Native, born in PR, Island Areas, or abroad:100.36%
Foreign born, naturalized U.S. citizen:160.58%
Foreign born, not a U.S. citizen:70.84%
Total Population:2,741100%
Total Native Population:2,71899.16%
Total Foreign-born Population:230.84%
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


In 2023, the Median household income is $94,522, which is much higher than the state median ($75,670), is up $36,032 (61.6%) since 2011 and above its 2019 pre-pandemic level by $28,681. Family households earn a median of $101,818 versus $75,875 for nonfamily households (a difference of $25,943). By gender, male median income is $61,892 and female is $45,841, which is well under the national female median ($53,445), with a current gap of $16,051 that has widened from 2011 to 2023. The labor-force participation rate is 65.9%, which is edges past the national rate (63.5%). The unemployment rate is 2.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Management (32.7%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2023 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 Type2011201220132014201520162017201820192020202120222023
Median Household Income$58,490$55,313$51,696$51,500$54,010$56,250$60,298$62,305$65,841$72,386$81,635$87,625$94,522
Median Family Income$73,029$72,683$65,294$67,679$67,045$66,300$73,281$72,768$76,917$80,893$89,417$92,222$101,818
Median NonFamily Income$31,983$33,393$35,250$31,759$30,163$33,750$33,188$33,125$35,978$45,227$46,250$74,722$75,875
Median Male Income$50,458$49,342$44,913$44,180$42,455$44,896$50,903$52,452$52,422$56,714$63,700$58,678$61,892
Median Female Income$35,993$35,625$35,380$36,136$37,431$38,889$38,977$41,100$35,375$36,482$37,068$39,743$45,841
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


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

Employment Status


Employed:1,53164.60%
Unemployed:321.35%
Not In Labor Force:80734.05%
Total:2,370100%
Source: U.S. Census 2019-2023 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:50032.66%
Service:16911.04%
Sales and Office:29319.14%
Natural resources, construction, and maintenance:22414.63%
Production, transportation, and material moving:34522.53%
Total Civilian Employed Population:1,531100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2023, the median home value is $337,800, which is far above the state median ($247,400), is up $131,200 (63.50%) since 2011 and above its 2019 pre-pandemic level by $117,400. The median gross rent is $847, which is considerably lower than the national median ($1,348), is down $7 (0.82%) since 2011 and below its 2019 pre-pandemic level by $27. Of occupied housing, owners make up 74.25% (58.67% with a mortgage, 41.33% free-and-clear) and renters 25.75% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 7.52%, which is much lower than the state rate (11.08%).

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

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


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

Median Home Value Over Time


Group2011210220132014201520162017201820192020202120222023
Median Home Value$206,600$208,000$206,600$196,300$193,400$199,900$205,500$215,000$220,400$233,100$263,200$304,700$337,800
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:207.09%
$500 to $999:12945.74%
$1,000 to $1,499:9433.33%
$1,500 to $1,999:82.84%
$2,000 to $2,499:62.13%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:258.87%
Total:282100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group2011210220132014201520162017201820192020202120222023
Median Rent$854$811$793$831$797$846$856$913$874$886$789$892$847
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):47743.56%
Owner Occupied (free and clear, no mortgage):33630.68%
Renter Occupied:28225.75%
Total Occupied Housing Units:1,095100%

Occupied Housing Units:1,09592.48%
Vacant Housing Units (not graphed):897.52%
Total Housing Units:1,184100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

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


Single-Family Units:90776.60%
Multi-Family Units:14312.08%
Other Units:13411.32%
Total Housing Units:1,184100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 23.60% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.00%). High school or higher is 93.30%, which is well above the national rate (89.40%). The uninsured rate is 3.40%, which is far lower than the national rate (8.60%). The share of people in poverty is 5.00%, which is falls below the national rate (8.70%), up 1.50 percentage points since 2011 and below its 2019 pre-pandemic level by 0.40 percentage points. This points to rising hardship - a weaker consumer base, greater strain on public services, and job-market headwinds. Among residents ages 3+, the largest enrollment group is elementary (46.65%). College enrollment is 9.83%, 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 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:140.66%
9th to 12th grade, no diploma:1286.00%
High school graduate (includes equivalency):84039.40%
Some college, no degree:39218.39%
Associate's degree:25511.96%
Bachelor's degree:37917.78%
Graduate or professional degree:1245.82%
Total:2,132100%
High school or higher:1,99093.34%
Bachelor's degree or higher:50323.59%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

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


Private Insurance:2,15268.25%
Public Insurance:90728.77%
No Insurance:942.98%
Total:3,153100%
Has Health Insurance:3,05997.02%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2023)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty3.5%4.4%4.7%4.6%4.7%7.0%6.8%7.1%5.4%4.7%2.0%3.5%5.0%
Source: U.S. Census 2011-2023 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:122.51%
Kindergarten:377.74%
Elementary school (grades 1-8):22346.65%
High school (grades 9-12):15933.26%
College or graduate school:479.83%
Total:478100%
Early Childhood:4910.25%
K-12 (Primary & Secondary School):41987.66%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 53178 supports both business and residential activity. According to the Business Census (2023), there are 58 business establishments, employing about 269 people with an annual payroll of $12,929,000. USPS data shows 1,159 residential mailboxes and 25 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:1,159Source: USPS
# Business Mailboxes:25Source: USPS
Total Delivery Receptacles:1,721Source: USPS
Single Family Delivery Units:1,144Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:58Source: CBP
1st Quarter Payroll:$2,640,000Source: CBP
Annual Payroll:$12,929,000Source: CBP
# of Employees:269Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 53178 is located in Jefferson County, Wisconsin, within the Watertown-Fort Atkinson, WI Metropolitan Statistical Area (CBSA 48020) and Wisconsin's 5th Congressional District. This Micro area has a population of 85,867 people, about 3.15% of whom live in ZIP Code 53178. It covers 31.862 sq mi of land and a water area of 1.052 sq mi.

CBSA Name:Watertown-Fort Atkinson, WISource: Census
CBSA Number:48020Source: Census
CBSA Type:MicroSource: Census
CBSA Division:--Source: Census
CBSA Population:85,867Source: Census
MSA:Source: Census
Land Area:31.862 sq miSource: Census
Water Area:1.052 sq miSource: Census
Congressional District:05Source: USPS
Congressional Land Area:1890.75 sq miSource: Census
PMSA:Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:5578175Source: Census
Place Name:Sullivan village; WisconsinSource: Census

Adjacent & Nearby ZIP Codes


53179 | | 53177

Schools in ZIP Code 53178


ZIP Code 53178 is in the Jefferson School District, which serves grades Pre-Kindergarten thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Sullivan Elementary 618 Bakertown Rd
Sullivan, WI 53178
District: Jefferson School District
St Peters Lutheran School W3255 US Highway 18
Helenville, WI 53137
District: Private SchoolNearby
St Bruno Parish School 246 W Ottawa Ave
Dousman, WI 53118
District: Private SchoolNearby
Genesee Lake School 36100 Genesee Lake Rd
Oconomowoc, WI 53066
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 53178


Nashotah House 2777 Mission Rd
Nashotah, WI 53058-9793
Type: Post Secondary
Maranatha Baptist University 745 West Main Street
Watertown, WI 53094
Type: Post Secondary
University Of Wisconsin-Whitewater 800 W Main St
Whitewater, WI 53190-1790
Type: Post Secondary
Waukesha County Technical College 800 Main Street
Pewaukee, WI 53072-4601
Type: Post Secondary
Wright Graduate University For The Realization Of Human Potential N7698 County Highway H
Elkhorn, WI 53121-2556
Type: Post Secondary
Carroll University 100 N East Ave
Waukesha, WI 53186
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 October 1, 2025.

  1. U.S. Postal Service [Last Updated: 10/1/2025], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 10/1/2025], 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 2011-2023 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: 10/1/2025], https://nces.ed.gov