Residential delivery area · Pennsylvania
ZIP Code 16051: Portersville, PA
ZIP code 16051 uses the postal name Portersville, Pennsylvania and lies mostly in Butler County (60% of its land) with the rest in Lawrence County (Census 2020 ZIP-county file). About 3,100 people live there (Census Bureau, ACS 2020-2024). Median household income is $88,958 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Portersville (2%) and Lake Arthur Estates (2%); 96% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Portersville · its only residential ZIP
- County
- Butler County (60%); Lawrence County (41%)
- Census places
- Portersville (2%); Lake Arthur Estates (2%) census-designated place
- Metro area
- Pittsburgh, PA
- House district
- PA-16 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 39.8 sq mi · 78 people per sq mi
Where is ZIP code 16051?
16051 centers on 40.943°, -80.139° and covers 39.8 square miles of land plus 3.1 of water. It borders 6 ZIP codes: 16052, 16037, 16057, 16117, 16101, 16123.
The map draws ZIP code areas only. For the streets inside 16051, 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 16051 compare with the rest of Butler County?
| Measure | 16051 | In Butler County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 3,119 | 19th of 36 | 798th of 1,833 |
| Median household income | $89k | 10th of 25 | 296th of 1,015 |
| Median home value | $216k | 15th of 27 | 550th of 1,069 |
Its median household income is higher than in 72% of U.S. residential ZIP codes, and it is denser than 50% 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 16051?
The 2020 Census counted 2,895 people in 16051; the ACS, which samples households over 2020-2024, estimates 3,119. Between the 2010 and 2020 censuses its population fell 4.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,119±398 (90% margin)
- 2020 Census count
- 2,895−4.9% since 2010 (3,043)
- Households
- 1,315
- Median age
- 45.4
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 16051?
Of the 3,119 people the ACS estimates in 16051, 19.5% are under 18 and 19.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.2%).
- Under 1819.5%
- 18 to 6460.9%
- 65 and older19.7%
- White, not Hispanic92.2%
- Other or two or more7.5%
- Hispanic or Latino0.3%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
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 16051 earn?
Median household income is $88,958 (ACS 2020-2024), the 10th highest of the 25 ranked ZIP codes in Butler County. It rose from $67,265 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $88,958±$12,802
- Income per person
- $43,575
- Below the poverty line
- 5.4%
- Unemployed (of the labor force)
- 1.4%
- Adults 25+ with a bachelor's degree
- 30.5%
- Adjusted gross income per tax return, 2022
- $92,2341,380 returns; wages 56% 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 16051?
FHFA's house price index for 16051, built from repeat sales and appraisals of the same homes, rose 71% from 2015 to 2025 and rose 47% from 2020 to 2025, and moved +12.4% in 2025.
- Median home value (owners' estimate)
- $215,600
- Median gross rent
- $964
- Homes owned by their occupants
- 92.2%
- Housing units
- 1,395
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 16051?
91 business establishments had a location in this ZIP code in 2023, 11 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction17
- Other services (except public administration)12
- Retail trade10
- Professional, scientific, and technical services9
- Manufacturing7
- Wholesale trade7
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 16051?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 16052 | Prospect | 2,215 | $82k | 5.0 mi |
| 16037 | Harmony | 5,291 | $93k | 6.9 mi |
| 16057 | Slippery Rock | 15,718 | $58k | 7.5 mi |
| 16117 | Ellwood City | 15,786 | $73k | 7.8 mi |
| 16101 | New Castle | 30,767 | $51k | 8.4 mi |
| 16123 | Fombell | 2,335 | $103k | 8.9 mi |
| 16001 | Butler | 39,234 | $64k | 10.4 mi (near) |
| 16027 | Connoquenessing | 423 | $85k | 10.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.