66543 ZIP Code — Vassar, KS

Osage County, Kansas

ZIP code 66543 is located in Vassar, Kansas, within Osage County. It covers approximately 8.87 square miles and serves a population of 1,044 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 785.

About ZIP code 66543

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $160,700. Owner-occupancy is high at 87%, well above the national average.

Median household income is $85,536. The poverty rate of 5% is below the national average. 32% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 39 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Overall, ZIP code 66543 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,044

population

8.87

sq mi land

Standard

ZIP type

Central (CT)

timezone

66543 ZIP code map

Cities in ZIP code 66543

Below are the cities the US Postal Service accepts for ZIP code 66543. Using any city not on this list may result in mail delivery delays.

City	Status
Vassar	Preferred

Nearby ZIP codes

66451 Lyndon (4.9 mi) 66528 Quenemo (6.8 mi) 66076 Pomona (9.2 mi) 66524 Overbrook (10.2 mi) 66537 Scranton (11.9 mi) 66414 Carbondale (12 mi) 66510 Melvern (12.1 mi) 66067 Ottawa (15.8 mi) 66095 Williamsburg (15.8 mi) 66523 Osage City (16 mi) 66413 Burlingame (16 mi) 66409 Berryton (17.1 mi)

Demographics updated 06/2026

Population
Total population	1,044
Population density	118 / sq mi
State FIPS	20
County FIPS	139

Geography
Land area	8.87 sq mi
Water area	0.01 sq mi
Latitude	38.6736
Longitude	-95.5731
Timezone	Central (CT)
Area code	785

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.8%	43.4%	41.1%
$50k – $100k	35.8%	36.7%	32.2%
$100k – $200k	21.8%	17.3%	21.0%
Over $200k	9.6%	2.6%	5.7%

Demographics & statistics

1,044

Population

118

People per sq mi

45.4

Median age

$85,536

Median household income

$40,764

Per capita income

$160,700

Median home value

$1,053

Median monthly rent

87.0%

Home ownership

5.4%

Poverty rate

4.0%

Unemployment

416

Housing units

22.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	187	17.9%
18 and over	857	82.1%
65 and over	184	17.6%
Median age	45.4 years

Race & ethnicity

White 89.9%

Two or more races 5.9%

Hispanic or Latino 2.4%

Other race 1.8%

Group	Count	%
White	962	89.9%
Two or more races	63	5.9%
Hispanic or Latino	26	2.4%
Other race	19	1.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.8%	43.4%	41.1%
$50k – $100k	35.8%	36.7%	32.2%
$100k – $200k	21.8%	17.3%	21.0%
Over $200k	9.6%	2.6%	5.7%

$10k–$15k 5.1%

$15k–$25k 4.4%

$25k–$35k 11.1%

$35k–$50k 8.1%

$50k–$75k 19.2%

$75k–$100k 10.9%

$100k–$150k 24.3%

$150k–$200k 3.5%

$200k+ 13.4%

Range	% of households
$10k–$15k	5.1%
$15k–$25k	4.4%
$25k–$35k	11.1%
$35k–$50k	8.1%
$50k–$75k	19.2%
$75k–$100k	10.9%
$100k–$150k	24.3%
$150k–$200k	3.5%
$200k+	13.4%
Median income	$85,536

Housing

Home values

Under $50k 11.7%

$50k–$100k 12.8%

$100k–$150k 18.6%

$150k–$200k 21.3%

$200k–$300k 30.3%

$300k–$500k 5.3%

Housing overview

Metric	Value
Median home value	$160,700
Median rent / month	$1,053
Owner occupied	87.0%
Renter occupied	13.0%
Vacant	8.5%
Single-family detached	84.5%
Large apartment buildings	0.0%
Mobile homes	11.9%
Median rooms	5.9
Avg household size (owned)	2.48

Year built

Era	%
2020 or later	0.0%
2010–2019	0.6%
2000–2009	12.9%
1990–1999	17.4%
1980–1989	19.7%
1970–1979	19.1%
1960–1969	20.8%
1950–1959	1.3%
1940–1949	4.4%
1939 or earlier	3.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.2%
2 bedrooms	34.5%
3 bedrooms	40.5%
4 bedrooms	15.7%
5+ bedrooms	9.1%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	21.8%
2 vehicles	32.2%
3 or more	44.7%

Heating fuel

Fuel type	%
Utility gas	1.4%
Electricity	56.3%
Propane / LP gas	34.0%
Wood	8.3%

Households & families

Household type	Count	%
Married-couple family	240	55.6%
Cohabiting couple	41	9.5%
Male householder, no spouse	98	22.7%
Female householder, no spouse	53	12.3%
Households with children under 18	83	19.2%
Households with seniors (65+)	141	32.6%
Average household size	2.42

Marital status

Status	Male	Female
Never married	18.8%	18.2%
Married	57.2%	47.7%
Separated	7.0%	0.0%
Widowed	2.5%	15.0%
Divorced	14.6%	19.2%

Education

Less than 9th grade 0.0%

Some HS, no diploma 3.0%

HS graduate 34.0%

Some college, no degree 28.6%

Associate's degree 11.8%

Bachelor's degree 14.8%

Graduate / professional 7.8%

Metric	%
HS diploma or higher	97.0%
Bachelor's or higher	22.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	10	5.4%
Kindergarten	16	8.6%
Elementary school	96	51.9%
High school	22	11.9%
College / grad school	41	22.2%

Employment

Industry of employment

Education & healthcare 29.2%

Professional & management 17.2%

Transportation & utilities 10.0%

Arts, food & hospitality 8.7%

Manufacturing 7.4%

Finance & real estate 5.6%

Public administration 5.1%

Retail trade 4.5%

Construction 3.8%

Other services 2.9%

Agriculture & mining 2.5%

Information 2.0%

Wholesale trade 1.1%

Occupation

Category	%
Management, business & arts	29.3%
Service	25.7%
Sales & office	12.0%
Natural resources & construction	17.0%
Production & transportation	15.9%

Employment type

Type	%
Private sector	84.6%
Government	11.8%
Self-employed	3.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.6%
Carpool	5.8%
Public transit	0.0%
Walk	6.5%
Work from home	7.1%
Other means	0.0%
Avg commute (minutes)	38.8

Poverty

All people 5.4%

Under 18 years 0.0%

18 and over 6.5%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	31.7%
Retirement income	19.0%
Supplemental Security	6.0%
Cash public assistance	6.0%
Food stamps / SNAP	1.2%

Health indicators

Condition	%
Obesity	42.3%
High blood pressure	39.5%
High cholesterol	39.0%
Diabetes	12.3%
Heart disease	8.1%
Stroke	3.4%
Asthma	9.3%
Arthritis	29.4%
Kidney disease	3.3%
Pulmonary disease	7.8%
Cancer	8.4%

Behavior / access	%
Smoking	18.3%
Binge drinking	15.4%
No physical activity	25.3%
Less than 7 hrs sleep	32.6%
Depression	19.9%
Fair or poor health	14.5%
Poor mental health	12.7%
Poor physical health	10.7%
No health insurance	13.0%
Visited doctor (checkup)	76.8%
Visited dentist	66.4%
Cholesterol screening	91.2%
Teeth loss	12.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	82	9.6%

Disability	%
Any disability	17.4%
Under 18	0.0%
18–64 years	15.8%
65 and over	41.3%

Health insurance coverage

Type	%
Private insurance	77.9%
Public insurance	32.7%
No insurance	7.2%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,003	96.1%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,021	97.8%
Born in same state	1,017	97.4%
Born in different state	805	77.1%
Foreign born	4	0.4%
Naturalized citizen	23	2.2%
Not a US citizen	23	100.0%

Ancestry

Ancestry	Count	%
French	164	15.7%
Italian	152	14.6%

Ancestry	Count	%
Arab	58	5.6%
Dutch	15	1.4%

Technology access

Metric	% of households
Computer access	41.4%
Internet access	96.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 66543

What city is ZIP code 66543 in?

ZIP code 66543 is primarily assigned to Vassar, Kansas.

What county is ZIP code 66543 in?

ZIP code 66543 falls within Osage County, Kansas.

Is ZIP code 66543 mostly owner-occupied?

87% of occupied units in ZIP code 66543 are owner-occupied, well above the national average.

Does ZIP code 66543 have a large veteran population?

10% of civilians in ZIP code 66543 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 66543?

The median home value in ZIP code 66543 is $160,700.

What is the population of ZIP code 66543?

ZIP code 66543 has an estimated population of 1,044 residents, with a density of 118 people per square mile.

What timezone is ZIP code 66543 in?

ZIP code 66543 observes the CST timezone.