| ZIP Codes: | 19 ZIP Codes (12 Standard, 6 PO Box, 1 Unique) [See All] |
| Area Codes: | 724 / 878 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:32 PM |
| Population: | 89,673 [See All] |
| FIPS: | 42073 |
| CBSA: | Pittsburgh, PA |
| Land Area: | 375 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 41.0103, -80.3841 |
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89,673 residents live across 19 ZIPs covering 375 sq mi, served by 13 distinct USPS-recognized cities.
Population moved from 96,579 to 88,690 from 2014 to 2024 — a -8.2% change. 6 ZIPs gained residents, 9 lost.
The county's wealthiest ZIP 16143 (Pulaski, $85,375 median) and poorest ZIP 16160 (West Pittsburg, $44,510) are 13.4 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.2× across this county — from $104,900 in 16102 (New Castle) to $226,300 in 16142 (New Wilmington).
Density varies 441× across the county — from 66 people/sq mi in 16120 (Enon Valley) to 29,169 in 16172 (New Wilmington).
Educational attainment ranges from 10.3% bachelor's+ in 16160 (West Pittsburg) to 36.7% in 16142 (New Wilmington) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #33 most populous of 67 counties and ranks #48 for median household income .
Hosts 1 single-entity Unique ZIP: 16172Westminster College .
Weighted by population, the typical household earns about $63,017 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.9% of adults age 25+ hold a bachelor's degree or higher (15,474 of 64,747 reporting).
12 Standard delivery, 6 PO Box only, 1 single-entity Unique ZIPs serve this county.
Lawrence County lost 7.2% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 16101 | New Castle | Standard | 30,767 | $51,128 | 70.3 | -8.9% |
| 16117 | Ellwood City | Standard | 15,786 | $73,045 | 36.9 | -7.4% |
| 16105 | New Castle | Standard | 15,418 | $65,855 | 25.9 | 3.7% |
| 16142 | New Wilmington | Standard | 5,522 | $84,205 | 43.6 | -27.1% |
| 16102 | New Castle | Standard | 4,929 | $56,053 | 25.6 | -13.5% |
| 16156 | Volant | Standard | 3,431 | $69,054 | 51.7 | 18.7% |
| 16157 | Wampum | Standard | 2,840 | $60,345 | 25.1 | -19.3% |
| 16116 | Edinburg | Standard | 2,727 | $69,559 | 25.6 | -4.1% |
| 16120 | Enon Valley | Standard | 2,221 | $65,750 | 33.6 | -3.4% |
| 16143 | Pulaski | Standard | 2,100 | $85,375 | 25.3 | -32.4% |
| 16112 | Bessemer | Standard | 1,322 | $74,821 | 7.3 | -16.0% |
| 16172 | New Wilmington | Unique | 983 | — | 0.0 | — |
| 16160 | West Pittsburg | PO Box | 909 | $44,510 | 1.3 | 1.1% |
| 16132 | Hillsville | PO Box | 327 | $57,650 | 2.5 | 8.6% |
| 16140 | New Bedford | PO Box | 293 | — | 0.0 | 120.3% |
| 16155 | Villa Maria | PO Box | 98 | — | 0.0 | 28.9% |
| 16108 | New Castle | Standard | — | — | 0.0 | — |
| 16107 | New Castle | PO Box | — | — | 0.0 | — |
| 16103 | New Castle | PO Box | — | — | 0.0 | — |