ZIP Codes of Mccurtain County, OK

Population & People
Population & People
Total Population
31,863
Household Income
Household Income
Median Income
$51,572
Housing
Housing
Total Housing Units
14,468
Business & Economy
Business & Economy
Total Businesses
674
Employment
Employment
Employment Rate
51.10%
Education
Education
Bachelor's Degree+
16.36%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 16 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:16 ZIP Codes (12 Standard, 4 PO Box, 0 Unique) [See All]
Area Codes:539 / 580 / 918
Timezone:Central (GMT -06:00)
Local Time:2:13:25 PM
Population:31,863 [See All]
FIPS:40089
Land Area:2,164 sq mi
Water Area:29 sq mi
Coordinates:34.1528, -94.8802
Quick Link:
https://www.zip-codes.com/county/ok-mccurtain.asp
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Oklahoma's largest county by area
Spans 2,164 sq mi — the largest of 78 counties.
Wide geographic spread
ZIPs range from 691.6 sq mi down to 13.77 — a 50× sprawl ratio.

Standout ZIPs in this County


Most Populous
Broken Bow · 10,977 people
34.5% of county total
Highest Income
Watson · $65,833 median
1.3× county average
Largest Land Area
Broken Bow · 691.6 sq mi
Spans the most ground
Fastest Growth
Haworth · -0.3% (10-yr)
1,964 → 1,959 residents
Most Educated
Idabel · 18.5% bachelor's+
1,128 of 6,107 adults 25+

Things worth knowing about Mccurtain County


31,863 residents live across 16 ZIPs covering 2,164 sq mi, served by 16 distinct USPS-recognized cities.

Population moved from 34,045 to 31,836 from 2014 to 2024 — a -6.5% change. 3 ZIPs gained residents, 11 lost.

The county's wealthiest ZIP 74963 (Watson, $65,833 median) and poorest ZIP 74750 (Millerton, $38,333) are 38.9 miles apart — a 1.7× income gap across local geography.

Median home values vary 2.7× across this county — from $66,300 in 74750 (Millerton) to $176,200 in 74734 (Eagletown).

Density varies 15865× across the county — from 3 people/sq mi in 74957 (Smithville) to 48,571 in 74750 (Millerton).

Educational attainment ranges from 7.7% bachelor's+ in 74766 (Wright City) to 19.3% in 74957 (Smithville) — the breadth of educational profiles across the area.

Within Oklahoma, this is the #30 most populous of 78 counties and ranks #61 for median household income .

Weighted by population, the typical household earns about $53,094 across the county — reflecting what a typical resident sees, not a simple ZIP average.

16.4% of adults age 25+ hold a bachelor's degree or higher (3,432 of 20,974 reporting).

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

Stories about Mccurtain 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
2,164
square miles
Avg density
14.7
people per sq mi
Population
31,863
across 16 ZIPs
Broken Bow
691.6 sq mi
10,977 residents
Smithville
272.4 sq mi
834 residents
Haworth
266.0 sq mi
1,959 residents

Population decline

Mccurtain County lost 6.4% of residents between 2014 and 2024. ZIPs that shed the largest share:

Millerton
-66.3%
504 → 170 residents
Eagletown
-32.9%
1,279 → 858 residents
Smithville
-20.9%
1,055 → 834 residents
Wright City
-19.6%
1,368 → 1,100 residents
Garvin
-18.9%
1,167 → 947 residents

All ZIP Codes in Mccurtain County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
74728Broken BowStandard10,977$59,415691.6-3.9%
74745IdabelStandard9,720$47,134176.6-2.1%
74764ValliantStandard3,582$58,350121.6-4.9%
74740HaworthStandard1,959$41,141266.0-0.3%
74766Wright CityStandard1,100$48,75051.8-19.6%
74736GarvinStandard947$59,16776.6-18.9%
74734EagletownStandard858$49,722263.0-32.9%
74957SmithvilleStandard834$43,125272.4-20.9%
74963WatsonStandard689$65,83390.710.4%
74754RingoldStandard541$48,37592.4155.2%
74755RufeStandard18613.8165.7%
74750MillertonPO Box170$38,3330.0-66.3%
74722BattiestPO Box141$57,0830.0-49.8%
74724BethelStandard132$44,58347.9-67.3%
74737GoldenPO Box27$61,0000.0
74752PickensPO Box0.0

Adjacent & Nearby Counties