ZIP Codes of Ottawa County, KS

Population & People
Population & People
Total Population
5,666
Household Income
Household Income
Median Income
$66,820
Housing
Housing
Total Housing Units
2,664
Business & Economy
Business & Economy
Total Businesses
128
Employment
Employment
Employment Rate
62.36%
Education
Education
Bachelor's Degree+
28.36%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:785
Timezone:Central (GMT -06:00)
Local Time:11:53:32 PM
Population:5,666 [See All]
FIPS:20143
CBSA:Salina, KS
Land Area:598 sq mi
Water Area:1 sq mi
Coordinates:39.1191, -97.7192
Quick Link:
https://www.zip-codes.com/county/ks-ottawa.asp
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Kansas's #62 most populous county
5,666 residents across 4 ZIPs — #62 of 106 Kansas counties.

Standout ZIPs in this County


Most Populous
Minneapolis · 2,871 people
50.7% of county total
Highest Income
Bennington · $85,556 median
1.3× county average
Largest Land Area
Minneapolis · 297.4 sq mi
Spans the most ground
Fastest Growth
Bennington · 6.3% (10-yr)
1,324 → 1,407 residents
Most Educated
Minneapolis · 28.6% bachelor's+
578 of 2,018 adults 25+

Things worth knowing about Ottawa County


5,666 residents live across 4 ZIPs covering 598 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 5,658 to 5,666 from 2014 to 2024 — a +0.1% change. 3 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 67422 (Bennington, $85,556 median) and poorest ZIP 67436 (Delphos, $58,309) are 20.0 miles apart — a 1.5× income gap across local geography.

Median home values vary 2.7× across this county — from $81,200 in 67436 (Delphos) to $219,000 in 67422 (Bennington).

Density varies across the county — from 5 people/sq mi in 67436 (Delphos) to 23 in 67422 (Bennington).

Educational attainment ranges from 16.5% bachelor's+ in 67436 (Delphos) to 32.7% in 67484 (Tescott) — the breadth of educational profiles across the area.

Within Kansas, this is the #62 most populous of 106 counties and ranks #53 for median household income .

Weighted by population, the typical household earns about $67,316 across the county — reflecting what a typical resident sees, not a simple ZIP average.

28.4% of adults age 25+ hold a bachelor's degree or higher (1,109 of 3,911 reporting).

4 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Ottawa County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
598
square miles
Avg density
9.5
people per sq mi
Population
5,666
across 4 ZIPs
Minneapolis
297.4 sq mi
2,871 residents
Tescott
137.0 sq mi
840 residents
Delphos
101.6 sq mi
548 residents

All ZIP Codes in Ottawa County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
67467MinneapolisStandard2,871$61,750297.43.3%
67422BenningtonStandard1,407$85,55661.66.3%
67484TescottStandard840$61,667137.05.1%
67436DelphosStandard548$58,309101.6-27.4%

Adjacent & Nearby Counties