ZIP Codes of Cimarron County, OK

Population & People
Population & People
Total Population
2,124
Household Income
Household Income
Median Income
$84,014
Housing
Housing
Total Housing Units
1,329
Business & Economy
Business & Economy
Total Businesses
60
Employment
Employment
Employment Rate
59.41%
Education
Education
Bachelor's Degree+
33.00%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:580
Timezone:Central (GMT -06:00)
Local Time:2:13:23 PM
Population:2,124 [See All]
FIPS:40025
Land Area:1,814 sq mi
Water Area:5 sq mi
Coordinates:36.7500, -102.6276
Quick Link:
https://www.zip-codes.com/county/ok-cimarron.asp
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Among Oklahoma's 5 wealthiest counties
#3 statewide, average median income $84,014.
Among Oklahoma's 5 most-educated counties
33.0% with bachelor's+ (#5 statewide).
Oklahoma's shortest commutes
8-minute avg commute — the shortest in the state.
Notable income spread
Median income ranges $49,904 to $136,389 across ZIPs — a 2.7× gap.
Among Oklahoma's 5 oldest counties
Median age 45.8.
Striking education divide
Bachelor's share spans 19.5% to 58.3% — a 39-point gap.

Standout ZIPs in this County


Most Populous
Boise City · 1,335 people
62.9% of county total
Highest Income
Keyes · $136,389 median
1.6× county average
Largest Land Area
Boise City · 968.8 sq mi
Spans the most ground
Fastest Growth
Boise City · -16.6% (10-yr)
1,601 → 1,335 residents
Most Educated
— no education data

Things worth knowing about Cimarron County


2,124 residents live across 4 ZIPs covering 1,814 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 2,314 to 2,124 from 2014 to 2024 — a -8.2% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 73947 (Keyes, $136,389 median) and poorest ZIP 73933 (Boise City, $49,904) are 22.2 miles apart — a 2.7× income gap across local geography.

Median home values vary 1.4× across this county — from $77,000 in 73933 (Boise City) to $110,700 in 73937 (Felt).

Density varies across the county — from 1 people/sq mi in 73947 (Keyes) to 1 in 73937 (Felt).

Educational attainment ranges from 19.5% bachelor's+ in 73933 (Boise City) to 58.3% in 73947 (Keyes) — the breadth of educational profiles across the area.

Within Oklahoma, this is the #78 most populous of 78 counties and ranks #3 for median household income .

Weighted by population, the typical household earns about $72,424 across the county — reflecting what a typical resident sees, not a simple ZIP average.

33.0% of adults age 25+ hold a bachelor's degree or higher (493 of 1,494 reporting).

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

Stories about Cimarron 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
1,814
square miles
Avg density
1.2
people per sq mi
Population
2,124
across 4 ZIPs
Boise City
968.8 sq mi
1,335 residents
Keyes
431.8 sq mi
499 residents
Kenton
215.6 sq mi
12 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Boise City

Population decline

Cimarron County lost 8.2% of residents between 2014 and 2024. ZIPs that shed the largest share:

Boise City
-16.6%
1,601 → 1,335 residents

All ZIP Codes in Cimarron County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
73933Boise CityStandard1,335$49,904968.8-16.6%
73947KeyesStandard499$136,389431.815.0%
73937FeltStandard278$65,750197.858.9%
73946KentonStandard12215.6-88.5%

Adjacent & Nearby Counties