74021
ZIP 74021 is Collinsville, Oklahoma, mostly in Tulsa County; area codes 918 and 539; Central time.
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Where 74021 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 74021 into a pocket calculator and turn it upside down: IZOhL — not quite a word, sorry.
- ➕ 74021 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 14, a total 1,416 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10010000100100101 - 🏠 Its numerical neighbours: 74020 (Cleveland, OK, 33 mi away) and 74022 (Copan, OK, 38 mi away).
- 🔄 Backwards, 74021 becomes 12047 — and that is a real ZIP code: Cohoes, NY, 1,254 miles away.
- 👥 66 other ZIP codes are made of exactly the same digits (01247, 01472, 01742, 02471, 02714, 02741, …). The farthest-flung twin is 04271 in Paris, ME, 1,435 miles away.
- 🧭 Farther south than 67% of all ZIP codes, and farther west than 71%.
- 🎯281 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 74021 and you would come out at 36.38°S, 84.15°E — 1,137 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 39m of daylight. Shortest: 9h 40m.
- 📏 At 67.0 square miles of land, 74021 is bigger than 68% of ZIP codes — room for about 51 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 23,628This ZIP23,628 |
|---|---|
| Households | 8,311This ZIP8,311 |
| Housing units | 8,758This ZIP8,758 |
| Median age | 37.2This ZIP37.2Oklahoma37.0US 38.9 |
| Median household income | $92,091This ZIP$92,091Oklahoma$65,039US $80,734 |
| Median home value | $245,200This ZIP$245,200Oklahoma$199,800US $332,700 |
| Median gross rent | $1,217This ZIP$1,217Oklahoma$1,014US $1,413 |
| Bachelor's degree or higher | 24.7%This ZIP24.7% |
| Mean commute | 25.7 minThis ZIP25.7 min |
| Population density | 352.5 / sq miThis ZIP352.5 / sq mi |
Business and tax activity
| Business establishments | 275This ZIP275 |
|---|---|
| Employees | 2,101This ZIP2,101 |
| Annual payroll | $108,981,000This ZIP$108,981,000 |
| Tax returns filed | 9,960This ZIP9,960 |
| Total adjusted gross income | $779,554,000This ZIP$779,554,000 |
Land area
| Land area | 67.02 sq miThis ZIP67.02 sq mi |
|---|---|
| Water area | 0.26 sq miThis ZIP0.26 sq mi |
Counties 74021 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Tulsa County | 66.2% |
| Rogers County | 18.9% |
| Washington County | 14.9% |
Other place names in 74021
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 74021
| ZIP | City | Distance |
|---|---|---|
74082 | Vera, OK | 5.2 mi |
74055 | Owasso, OK | 7.2 mi |
74053 | Oologah, OK | 7.3 mi |
74156 | Tulsa, OK | 8.3 mi |
74117 | Tulsa, OK | 9.7 mi |
74073 | Sperry, OK | 10.7 mi |
74061 | Ramona, OK | 11.0 mi |
74130 | Tulsa, OK | 11.3 mi |
74080 | Talala, OK | 12.5 mi |
74115 | Tulsa, OK | 12.9 mi |
Find every ZIP code within 10 miles of 74021 →
Questions about this ZIP code
Where is ZIP code 74021?
74021 is in Collinsville, Oklahoma, in Tulsa County, part of the Tulsa, OK metropolitan area. Its published point location is 36.3788, -95.8458.
What county is 74021 in?
74021 spans 3 counties: Tulsa County, Rogers County and Washington County. Most of it falls in Tulsa County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 74021?
Collinsville uses area codes 918 and 539, from NANPA's telephone records.
What time zone is 74021 in?
74021 uses America/Chicago.
How many people live in 74021?
About 23,628 people live in ZIP code 74021, in 8,311 households, at 352.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 74021?
$92,091 a year, against $65,039 across Oklahoma.
What ZIP codes are near 74021?
The closest are 74082 (5.2 mi), 74055 (7.2 mi), 74053 (7.3 mi), 74156 (8.3 mi) and 74117 (9.7 mi).
Is 74021 a PO Box ZIP code?
74021 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “74021 ZIP Code — Collinsville, Oklahoma (Tulsa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/74021
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/74021.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.