66078 ZIP Code — Princeton, KS

Franklin County, Kansas

ZIP code 66078 is located in Princeton, Kansas, within Franklin County. It covers approximately 64.42 square miles and serves a population of 812 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 785.

About ZIP code 66078

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $213,500. Owner-occupancy is high at 85%, well above the national average.

Median household income is $76,250. The poverty rate of 3% is below the national average. 39% 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. The average commute of 23 minutes is near the national average.

Educational attainment is near the national average, with 32% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 16% of civilians, above the national average of 7%.

Overall, ZIP code 66078 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

812

population

64.42

sq mi land

Standard

ZIP type

Central (CT)

timezone

66078 ZIP code map

Cities in ZIP code 66078

Below are the cities the US Postal Service accepts for ZIP code 66078. Using any city not on this list may result in mail delivery delays.

City	Status
Princeton	Preferred

Nearby ZIP codes

66080 Richmond (5.4 mi) 66079 Rantoul (8.2 mi) 66095 Williamsburg (9.5 mi) 66033 Greeley (9.8 mi) 66067 Ottawa (10 mi) 66042 Lane (10 mi) 66076 Pomona (12.6 mi) 66032 Garnett (14 mi) 66064 Osawatomie (14.7 mi) 66092 Wellsville (16.4 mi) 66528 Quenemo (17.8 mi) 66510 Melvern (18.5 mi)

Demographics updated 05/2026

Population
Total population	812
Population density	13 / sq mi
State FIPS	20
County FIPS	059

Geography
Land area	64.42 sq mi
Water area	0.78 sq mi
Latitude	38.4805
Longitude	-95.2584
Timezone	Central (CT)
Area code	785

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.0%	45.6%	41.1%
$50k – $100k	41.5%	35.1%	32.2%
$100k – $200k	24.6%	17.0%	21.0%
Over $200k	1.9%	2.3%	5.7%

Demographics & statistics

812

Population

People per sq mi

49.1

Median age

$76,250

Median household income

$34,634

Per capita income

$213,500

Median home value

$796

Median monthly rent

84.7%

Home ownership

3.2%

Poverty rate

0.2%

Unemployment

285

Housing units

31.5%

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	121	14.9%
18 and over	691	85.1%
65 and over	213	26.2%
Median age	49.1 years

Race & ethnicity

White 92.3%

Two or more races 3.7%

Hispanic or Latino 2.9%

Asian 0.7%

American Indian / Alaska Native 0.4%

Group	Count	%
White	772	92.3%
Two or more races	31	3.7%
Hispanic or Latino	24	2.9%
Asian	6	0.7%
American Indian / Alaska Native	3	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.0%	45.6%	41.1%
$50k – $100k	41.5%	35.1%	32.2%
$100k – $200k	24.6%	17.0%	21.0%
Over $200k	1.9%	2.3%	5.7%

Under $10k 2.6%

$10k–$15k 0.3%

$15k–$25k 3.9%

$25k–$35k 4.6%

$35k–$50k 12.4%

$50k–$75k 25.7%

$75k–$100k 16.0%

$100k–$150k 27.0%

$150k–$200k 5.5%

$200k+ 2.0%

Range	% of households
Under $10k	2.6%
$10k–$15k	0.3%
$15k–$25k	3.9%
$25k–$35k	4.6%
$35k–$50k	12.4%
$50k–$75k	25.7%
$75k–$100k	16.0%
$100k–$150k	27.0%
$150k–$200k	5.5%
$200k+	2.0%
Median income	$76,250

Housing

Home values

Under $50k 9.2%

$50k–$100k 12.7%

$100k–$150k 13.8%

$150k–$200k 7.7%

$200k–$300k 34.6%

$300k–$500k 20.0%

$500k–$1M 1.9%

Housing overview

Metric	Value
Median home value	$213,500
Median rent / month	$796
Owner occupied	84.7%
Renter occupied	15.3%
Vacant	7.5%
Single-family detached	92.8%
Large apartment buildings	0.0%
Mobile homes	7.2%
Median rooms	7.1
Avg household size (owned)	2.50

Year built

Era	%
2020 or later	0.0%
2010–2019	2.4%
2000–2009	14.5%
1990–1999	16.9%
1980–1989	6.6%
1970–1979	14.2%
1960–1969	8.1%
1950–1959	16.0%
1940–1949	0.3%
1939 or earlier	21.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.2%
2 bedrooms	10.5%
3 bedrooms	65.1%
4 bedrooms	16.9%
5+ bedrooms	6.3%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	3.9%
2 vehicles	28.3%
3 or more	67.8%

Heating fuel

Fuel type	%
Utility gas	28.7%
Electricity	28.3%
Propane / LP gas	28.3%
Fuel oil	1.3%
Wood	10.1%

Households & families

Household type	Count	%
Married-couple family	246	80.1%
Cohabiting couple	1	0.3%
Male householder, no spouse	15	4.9%
Female householder, no spouse	45	14.7%
Households with children under 18	70	22.8%
Households with seniors (65+)	126	41.0%
Average household size	2.64

Marital status

Status	Male	Female
Never married	14.7%	19.9%
Married	76.9%	66.8%
Separated	0.0%	1.3%
Widowed	4.5%	7.5%
Divorced	3.9%	4.4%

Education

Less than 9th grade 2.4%

Some HS, no diploma 10.1%

HS graduate 29.0%

Some college, no degree 19.6%

Associate's degree 7.3%

Bachelor's degree 25.1%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	87.4%
Bachelor's or higher	31.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	2	1.4%
Kindergarten	18	12.2%
Elementary school	56	37.8%
High school	35	23.6%
College / grad school	37	25.0%

Employment

Industry of employment

Education & healthcare 22.5%

Arts, food & hospitality 14.4%

Construction 12.2%

Retail trade 8.4%

Professional & management 8.1%

Wholesale trade 7.4%

Finance & real estate 6.2%

Transportation & utilities 5.7%

Public administration 5.0%

Agriculture & mining 3.6%

Manufacturing 3.6%

Other services 2.4%

Information 0.5%

Occupation

Category	%
Management, business & arts	31.8%
Service	18.9%
Sales & office	17.5%
Natural resources & construction	17.0%
Production & transportation	14.8%

Employment type

Type	%
Private sector	76.1%
Government	14.8%
Self-employed	9.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.3%
Carpool	7.0%
Public transit	0.0%
Walk	0.0%
Work from home	8.7%
Other means	1.0%
Avg commute (minutes)	23.1

Poverty

All people 3.2%

Under 18 years 10.7%

18 and over 1.9%

Married-couple families 1.2%

Female-led households 0.0%

Income support

Source	% of households
Social Security	39.1%
Retirement income	35.2%
Supplemental Security	1.0%
Cash public assistance	2.0%
Food stamps / SNAP	4.2%

Health indicators

Condition	%
Obesity	40.8%
High blood pressure	35.0%
High cholesterol	34.5%
Diabetes	10.7%
Heart disease	6.9%
Stroke	3.0%
Asthma	9.6%
Arthritis	26.1%
Kidney disease	2.9%
Pulmonary disease	7.0%
Cancer	7.3%

Behavior / access	%
Smoking	18.3%
Binge drinking	16.7%
No physical activity	24.4%
Less than 7 hrs sleep	31.3%
Depression	19.8%
Fair or poor health	13.4%
Poor mental health	13.7%
Poor physical health	10.0%
No health insurance	13.1%
Visited doctor (checkup)	74.1%
Visited dentist	63.7%
Cholesterol screening	89.6%
Teeth loss	13.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	112	16.2%

Disability	%
Any disability	10.3%
Under 18	5.0%
18–64 years	10.3%
65 and over	13.6%

Health insurance coverage

Type	%
Private insurance	76.7%
Public insurance	31.5%
No insurance	8.0%
Uninsured under 19	4.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	805	99.1%
Spanish	2	0.2%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	2	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	808	99.5%
Born in same state	805	99.1%
Born in different state	470	57.9%
Foreign born	3	0.4%
Naturalized citizen	4	0.5%
Not a US citizen	3	75.0%

Ancestry

Ancestry	Count	%
Italian	93	11.5%
French	46	5.7%

Ancestry	Count	%
Arab	34	4.2%
English	5	0.6%

Technology access

Metric	% of households
Computer access	37.8%
Internet access	90.9%

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

Frequently asked questions about ZIP code 66078

What city is ZIP code 66078 in?

ZIP code 66078 is primarily assigned to Princeton, Kansas.

What county is ZIP code 66078 in?

ZIP code 66078 falls within Franklin County, Kansas.

Does ZIP code 66078 have an older population?

26% of residents in ZIP code 66078 are 65 or older, above the national average of ~17%.

Is ZIP code 66078 mostly owner-occupied?

85% of occupied units in ZIP code 66078 are owner-occupied, well above the national average.

Does ZIP code 66078 have a large veteran population?

16% of civilians in ZIP code 66078 are veterans, above the national average of ~7%.

Does ZIP code 66078 have a large retiree population?

39% of households in ZIP code 66078 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 66078 in?

ZIP code 66078 observes the CST timezone.