| ZIP Codes: | 14 ZIP Codes (9 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 539 / 918 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:24 PM |
| Population: | 73,213 [See All] |
| FIPS: | 40037 |
| CBSA: | Tulsa, OK |
| Land Area: | 939 sq mi |
| Water Area: | 22 sq mi |
| Coordinates: | 35.9191, -96.3150 |
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73,213 residents live across 14 ZIPs covering 939 sq mi, served by 13 distinct USPS-recognized cities.
Population moved from 72,774 to 73,213 from 2014 to 2024 — a +0.6% change. 5 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 74041 (Kiefer, $83,365 median) and poorest ZIP 74052 (Oilton, $31,786) are 31.4 miles apart — a 2.6× income gap across local geography.
Median home values vary 2.5× across this county — from $89,500 in 74052 (Oilton) to $224,500 in 74041 (Kiefer).
Density varies 27× across the county — from 13 people/sq mi in 74028 (Depew) to 351 in 74041 (Kiefer).
Educational attainment ranges from 12.7% bachelor's+ in 74039 (Kellyville) to 26.9% in 74131 (Tulsa) — the breadth of educational profiles across the area.
Within Oklahoma, this is the #10 most populous of 78 counties and ranks #55 for median household income .
Weighted by population, the typical household earns about $63,946 across the county — reflecting what a typical resident sees, not a simple ZIP average.
17.8% of adults age 25+ hold a bachelor's degree or higher (8,925 of 50,221 reporting).
9 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 74066 | Sapulpa | Standard | 32,292 | $64,698 | 126.6 | 3.2% |
| 74010 | Bristow | Standard | 10,311 | $56,037 | 331.2 | -4.4% |
| 74044 | Mannford | Standard | 8,162 | $67,841 | 93.8 | 7.8% |
| 74047 | Mounds | Standard | 7,227 | $72,292 | 104.2 | 11.3% |
| 74039 | Kellyville | Standard | 3,826 | $64,286 | 68.4 | -2.9% |
| 74041 | Kiefer | Standard | 3,073 | $83,365 | 8.8 | 31.9% |
| 74030 | Drumright | Standard | 3,014 | $45,357 | 71.2 | -16.9% |
| 74131 | Tulsa | Standard | 2,435 | $76,382 | 10.5 | -26.0% |
| 74028 | Depew | Standard | 1,526 | $46,500 | 119.5 | -13.4% |
| 74052 | Oilton | PO Box | 1,065 | $31,786 | 5.2 | -21.0% |
| 74071 | Slick | PO Box | 130 | $19,415 | 0.0 | -15.6% |
| 74068 | Shamrock | PO Box | 94 | $27,750 | 0.0 | 84.3% |
| 74046 | Milfay | PO Box | 58 | — | 0.0 | -58.0% |
| 74067 | Sapulpa | PO Box | — | — | 0.0 | — |