Residential delivery area · Pennsylvania
ZIP Code 15122: West Mifflin, PA
ZIP code 15122 is in West Mifflin, Pennsylvania, entirely in Allegheny County (Census 2020 ZIP-county file). About 19,000 people live there (Census Bureau, ACS 2020-2024), the more populous of West Mifflin's 2 residential ZIP codes. Median household income is $72,485 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- West Mifflin · 2 residential ZIPs
- County
- Allegheny County
- Census places
- West Mifflin
- Metro area
- Pittsburgh, PA
- House district
- PA-12 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 12.9 sq mi · 1,455 people per sq mi
Where is ZIP code 15122?
15122 centers on 40.361°, -79.896° and covers 12.9 square miles of land plus 0.2 of water. It borders 10 ZIP codes: 15034, 15123, 15120, 15110, 15132, 15207, 15104, 15227, 15236, 15025.
The map draws ZIP code areas only. For the streets inside 15122, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 15122 compare with the rest of West Mifflin?
| Measure | 15122 | In West Mifflin | In Allegheny County | In PA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 18,816 | 1st of 2 | 29th of 117 | 216th of 1,833 |
| Median household income | $73k | 1st of 1 | 47th of 89 | 526th of 1,015 |
| Median home value | $151k | 1st of 1 | 73rd of 90 | 869th of 1,069 |
Its median household income is higher than in 51% of U.S. residential ZIP codes, and it is denser than 82% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 15122?
The 2020 Census counted 19,340 people in 15122; the ACS, which samples households over 2020-2024, estimates 18,816. Between the 2010 and 2020 censuses its population fell 3.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 18,816
- 2020 Census count
- 19,340−3.9% since 2010 (20,131)
- Households
- 8,185
- Median age
- 44.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 15122?
Of the 18,816 people the ACS estimates in 15122, 20.3% are under 18 and 20.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (83.2%).
- Under 1820.3%
- 18 to 6458.9%
- 65 and older20.8%
- White, not Hispanic83.2%
- Black, not Hispanic7.7%
- Other or two or more4.9%
- Hispanic or Latino3.2%
- Asian, not Hispanic0.9%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 15122 earn?
Median household income is $72,485 (ACS 2020-2024), the 47th highest of the 89 ranked ZIP codes in Allegheny County. It is not measurably different from 2015-2019 ($63,318 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $72,485±$9,408
- Income per person
- $37,759
- Below the poverty line
- 12.0%
- Unemployed (of the labor force)
- 8.5%
- Adults 25+ with a bachelor's degree
- 23.7%
- Adjusted gross income per tax return, 2022
- $58,97810,000 returns; wages 74% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 15122?
FHFA's house price index for 15122, built from repeat sales and appraisals of the same homes, rose 111% from 2015 to 2025 and rose 60% from 2020 to 2025, and moved +4.7% in 2025.
- Median home value (owners' estimate)
- $151,400
- Median gross rent
- $837
- Homes owned by their occupants
- 78.4%
- Housing units
- 8,913
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 15122?
349 business establishments had a location in this ZIP code in 2023, 15 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade66
- Health care and social assistance57
- Accommodation and food services40
- Other services (except public administration)39
- Construction26
- Administrative and support and waste management and remediation services19
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 15122?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 15034 | Dravosburg | 1,643 | $52k | 0.8 mi |
| 15123 | West Mifflin | 2 | – | 2.3 mi |
| 15120 | Homestead | 18,029 | $56k | 2.5 mi |
| 15110 | Duquesne | 5,149 | $44k | 2.5 mi |
| 15132 | McKeesport | 18,898 | $35k | 3.2 mi |
| 15207 | Pittsburgh | 10,961 | $57k | 3.3 mi |
| 15104 | Braddock | 8,034 | $40k | 3.4 mi |
| 15227 | Pittsburgh | 28,460 | $75k | 4.1 mi |
| 15236 | Pittsburgh | 31,313 | $91k | 4.4 mi |
| 15025 | Clairton | 16,939 | $77k | 4.6 mi |
| 15045 | Glassport | 4,368 | $48k | 2.5 mi (near) |
| 15133 | McKeesport | 6,112 | $66k | 2.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.