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US ZIP Code Profile

ZIP Code 73121
Oklahoma City, Oklahoma

ZIP code 73121 is in Oklahoma City, located in Oklahoma County, Oklahoma, within the Oklahoma City metro area. Its 2020 Census population was 3,218. The estimated median adjusted gross income per tax return is $41,987, and about 6% of filers report $200,000 or more.

2020 Population
3,218
Census ZCTA
County
Oklahoma
FIPS 40109
Median income (est.)
$41,987
IRS SOI 2022
Land Area
10.032 mi²
+ 0.021 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityOklahoma City, OK
CountyOklahoma County (FIPS 40109)
StateOklahoma (FIPS 40)
Metro Area (MSA)Oklahoma City, OK Metro Area (36420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates35.520515, -97.43953
Land / Water Area10.032 mi² land · 0.021 mi² water

02Income & Economics

Distribution of the 1,450 individual tax returns filed in 73121 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
31.7%
$25K–$50K
26.9%
$50K–$75K
13.8%
$75K–$100K
9.0%
$100K–$200K
13.1%
$200K+
5.5%
The $200,000+ bracket accounts for 49% of 73121's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($41,987) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 73121's IRS income metrics, 2020–2022.

Median income (2021→2022)
$41,987
▲ 0.5%
Filers earning $200K+
5.5%
▼ 0.2 pt
Total filers
1,450
▲ 2.8%
GET /zipc/v2/zipcodes/73121/soi?year=… $38K 2020 $42K 2021 $42K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 73121 ZCTA.

2000
3,186
 
2010
3,053
▼ -4.2%
2020
3,218
▲ +5.4%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 73121. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 73121

Oklahoma City and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 73121 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number396138
City AliasesOklahoma City, Okc, Lake Aluma, Forest Park

07Frequently Asked Questions

What county is ZIP code 73121 in?

ZIP code 73121 is in Oklahoma County, Oklahoma (county FIPS code 40109).

What city is ZIP code 73121?

The primary USPS city for 73121 is Oklahoma City, OK.

What metro area (MSA) is 73121 in?

73121 is part of the Oklahoma City, OK Metro Area (MSA code 36420).

What is the population of ZIP code 73121?

The 2020 Census population of 73121 was 3,218 residents.

What is the median income in ZIP code 73121?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 73121 is about $41,987, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.