ZIP Code 66543 in Vassar, KS

Data Last Updated: October 1, 2025
City:Vassar, Kansas
County:Osage County
Timezone:Central (GMT -06:00)
Local Time:8:37:37 AM
Population:782 [See All]
Area Code:785
Classification:Standard [Normal Street Delivery]
Coordinates:38.6418, -95.6003
Land Area:8.867 sq mi
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https://www.zip-codes.com/zip-code/66543/zip-code-66543.asp

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Population & Demographics


ZIP Code 66543 has 782 residents and 335 households (average 2.33 persons per household). The median age is 49.4 years, significantly older than the state (37.4) and significantly older than the nation (38.8). The gender split is 49.0% male and 51.0% female, which is about the same as the state male share (49.8%), making this a female-majority area. Largest groups are White (92.7%, much higher than the state average of 75.6% and well above the national average of 61.6%) and Hispanic or Latino (2.8%); Hispanic or Latino residents make up 2.8%, 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 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:782Source: Census DHC
2023 ACS Population Estimate:995Source: Census ACS
2025 ZC Population Estimate:852Source: ZIP-Codes.com
Population Density:88.2 people per sq mile
Average Income:$73,750Source: Census ACS
Households:335Source: Census DHC
Average House Value:$167,000Source: Census ACS
Persons Per Household:2.33Source: Census DHC
Average Family Size:2.89Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--9021,0049109971,0521,0221,1431,1691,0941,1331,1291,044995
Decennial Census725------------------782------
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: 49.4

Male Median Age: 51.3

Female Median Age: 48.6

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male1518232081217222922233848292614136
Female202034255132020242917464330281294
Total353857451325374253514084915954262210
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:72595.27%
Black:10.13%
Hispanic:*222.89%
Asian:40.53%
American Indian:00%
Hawaiian:10.13%
Other:81.05%
Total:761100%
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:38348.98%51.3 years
Females:39951.02%48.6 years
Total:782100%49.4 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:96897.29%
Native, born in PR, Island Areas, or abroad:70.70%
Foreign born, naturalized U.S. citizen:202.01%
Foreign born, not a U.S. citizen:02.01%
Total Population:995100%
Total Native Population:97597.99%
Total Foreign-born Population:202.01%
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 $73,750, which is lower than the national median ($78,538), is up $15,000 (25.5%) since 2011 and above its 2019 pre-pandemic level by $12,560. Family households earn a median of $105,357 versus $32,321 for nonfamily households (a difference of $73,036). By gender, male median income is $77,031 and female is $51,000, which is notably higher than the state female median ($48,278), with a current gap of $26,031 that has widened from 2011 to 2023. The labor-force participation rate is 60.1%, which is tends to be lower than the state rate (66.3%). The unemployment rate is 3.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Management (31.6%).

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$58,750$58,167$58,289$54,375$54,375$53,992$52,708$52,656$61,190$76,944$78,229$85,536$73,750
Median Family Income$63,690$58,750$58,882$63,098$62,448$65,431$65,792$68,352$72,989$92,222$93,125$104,231$105,357
Median NonFamily Income$23,409$24,375$26,477$21,518$31,458$24,250$24,853$26,875$52,250$49,375$47,841$48,333$32,321
Median Male Income$43,690$35,804$37,917$38,889$41,696$45,000$51,125$47,500$50,250$60,234$59,357$74,107$77,031
Median Female Income$27,375$27,454$29,071$35,526$32,875$35,393$35,882$33,229$32,143$34,500$35,625$41,250$51,000
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:48458.31%
Unemployed:151.81%
Not In Labor Force:33139.88%
Total:830100%
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:15331.61%
Service:8216.94%
Sales and Office:8317.15%
Natural resources, construction, and maintenance:9319.21%
Production, transportation, and material moving:7315.08%
Total Civilian Employed Population:484100%
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 $167,000, which is much lower than the national median ($303,400), is up $50,700 (43.59%) since 2011 and above its 2019 pre-pandemic level by $42,500. The median gross rent is $1,118, which is much lower than the national median ($1,348), is up $339 (43.52%) since 2011 and above its 2019 pre-pandemic level by $174. Of occupied housing, owners make up 82.19% (43.64% with a mortgage, 56.36% free-and-clear) and renters 17.81% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 8.68%, which is considerably lower than the national rate (10.43%).

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$116,300$113,000$118,900$130,600$136,000$127,200$134,100$126,200$124,500$133,700$137,700$160,700$167,000
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:1824.00%
$1,000 to $1,499:5066.67%
$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:79.33%
Total:75100%
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$779$692$683$696$695$817$881$860$944$941$1,055$1,053$1,118
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):15135.87%
Owner Occupied (free and clear, no mortgage):19546.32%
Renter Occupied:7517.81%
Total Occupied Housing Units:421100%

Occupied Housing Units:42191.32%
Vacant Housing Units (not graphed):408.68%
Total Housing Units:461100%
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:38383.08%
Multi-Family Units:163.47%
Other Units:6213.45%
Total Housing Units:461100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 21.30% of adults (25+) have a bachelor's degree or higher, which is markedly below the state rate (35.20%). High school or higher is 96.00%, which is far higher than the national rate (89.40%). The uninsured rate is 4.50%, which is generally lower than the state rate (8.90%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.70%), down 7.60 percentage points since 2011 and below its 2019 pre-pandemic level by 4.30 percentage points. 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 (46.99%). College enrollment is 25.14%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.

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:00.00%
9th to 12th grade, no diploma:293.95%
High school graduate (includes equivalency):23732.29%
Some college, no degree:20928.47%
Associate's degree:10314.03%
Bachelor's degree:10714.58%
Graduate or professional degree:496.68%
Total:734100%
High school or higher:70596.05%
Bachelor's degree or higher:15621.25%
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:72660.50%
Public Insurance:42935.75%
No Insurance:453.75%
Total:1,200100%
Has Health Insurance:1,15596.25%
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 Poverty7.6%9.7%9.5%14.6%7.3%9.6%9.0%8.7%4.3%4.6%2.1%0.0%0.0%
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:00.00%
Kindergarten:168.74%
Elementary school (grades 1-8):8646.99%
High school (grades 9-12):3519.13%
College or graduate school:4625.14%
Total:183100%
Early Childhood:168.74%
K-12 (Primary & Secondary School):13774.86%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 66543 supports both business and residential activity. According to the Business Census (2023), there are 6 business establishments, employing about 78 people with an annual payroll of $1,114,000. USPS data shows 366 residential mailboxes and 14 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:366Source: USPS
# Business Mailboxes:14Source: USPS
Total Delivery Receptacles:401Source: USPS
Single Family Delivery Units:321Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:6Source: CBP
1st Quarter Payroll:$253,000Source: CBP
Annual Payroll:$1,114,000Source: CBP
# of Employees:78Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 66543 is located in Osage County, Kansas, within the Topeka, KS Metropolitan Statistical Area (CBSA 45820) and Kansas's 2nd Congressional District. This Metro area has a population of 232,724 people, about 0.34% of whom live in ZIP Code 66543. It covers 8.867 sq mi of land and a water area of 0.006 sq mi.

CBSA Name:Topeka, KSSource: Census
CBSA Number:45820Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:232,724Source: Census
MSA:Source: Census
Land Area:8.867 sq miSource: Census
Water Area:0.006 sq miSource: Census
Congressional District:02Source: USPS
Congressional Land Area:14143.34 sq miSource: Census
PMSA:Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:2073450Source: Census
Place Name:Vassar CDP; KansasSource: Census

Adjacent & Nearby ZIP Codes


66544 | | 66542

Schools in ZIP Code 66543


We could not locate which school district 66543 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.

Lyndon High 421 East 6th St
Lyndon, KS 66451
District: Lyndon Unified School District 421Nearby
Lyndon Elem 421 East 6th St
Lyndon, KS 66451
District: Lyndon Unified School District 421Nearby
Marais Des Cygnes Valley Elem 213 N 8th
Quenemo, KS 66528
District: Marais des Cygnes Valley Unified School District 456Nearby
Marais Des Cygnes Valley High 508 Ne Main
Melvern, KS 66510
District: Marais des Cygnes Valley Unified School District 456Nearby
Marais Des Cygnes Valley Middle 508 N E Main
Melvern, KS 66510
District: Marais des Cygnes Valley Unified School District 456Nearby
Sacred Heart Catholic School 426 S Cedar St
Ottawa, KS 66067
District: Private SchoolNearby
St Matthew Catholic School 1000 Se 28th St
Topeka, KS 66605
District: Private SchoolNearby
Raintree Montessori School 4601 Clinton Pkwy
Lawrence, KS 66047
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 66543


Ottawa University-Ottawa 1001 South Cedar
Ottawa, KS 66067-3399
Type: Post Secondary
Ottawa University-Online 1001 South Cedar
Ottawa, KS 66067
Type: Post Secondary
Baker University 615 Dearborn Street
Baldwin City, KS 66006-0065
Type: Post Secondary
Midwest Barber College 901 Sw. 37th Street
Topeka, KS 66611-2358
Type: Post Secondary
Washburn University 1700 Sw College Avenue
Topeka, KS 66621-0001
Type: Post Secondary
Haskell Indian Nations University 155 Indian Ave
Lawrence, KS 66046-4800
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