| ZIP Codes: | 31 ZIP Codes (20 Standard, 11 PO Box, 0 Unique) [See All] |
| Area Codes: | 223 / 717 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:31 PM |
| Population: | 147,766 [See All] |
| FIPS: | 42055 |
| CBSA: | Chambersburg, PA |
| Land Area: | 744 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 39.9539, -77.6796 |
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147,766 residents live across 31 ZIPs covering 744 sq mi, served by 30 distinct USPS-recognized cities.
Population moved from 140,821 to 147,739 from 2014 to 2024 — a +4.9% change. 15 ZIPs gained residents, 12 lost.
The county's wealthiest ZIP 17224 (Fort Loudon, $114,779 median) and poorest ZIP 17201 (Chambersburg, $61,234) are 12.7 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.1× across this county — from $178,800 in 17263 (State Line) to $383,000 in 17214 (Blue Ridge Summit).
Density varies 719× across the county — from 30 people/sq mi in 17262 (Spring Run) to 21,232 in 17263 (State Line).
Educational attainment ranges from 10.1% bachelor's+ in 17244 (Orrstown) to 31.4% in 17214 (Blue Ridge Summit) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #23 most populous of 67 counties and ranks #16 for median household income .
Weighted by population, the typical household earns about $79,879 across the county — reflecting what a typical resident sees, not a simple ZIP average.
25.0% of adults age 25+ hold a bachelor's degree or higher (26,059 of 104,297 reporting). The most-educated ZIPs cluster around Chambersburg.
20 Standard delivery, 11 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 17202 | Chambersburg | Standard | 33,566 | $96,318 | 119.7 | 9.7% |
| 17268 | Waynesboro | Standard | 29,362 | $73,161 | 75.1 | 4.3% |
| 17201 | Chambersburg | Standard | 27,554 | $61,234 | 28.1 | 9.1% |
| 17225 | Greencastle | Standard | 20,347 | $88,457 | 80.8 | 3.2% |
| 17222 | Fayetteville | Standard | 10,550 | $80,000 | 72.4 | -1.3% |
| 17236 | Mercersburg | Standard | 8,845 | $79,271 | 125.2 | 6.8% |
| 17252 | Saint Thomas | Standard | 4,038 | $73,629 | 29.4 | 16.0% |
| 17244 | Orrstown | Standard | 2,263 | $70,729 | 31.6 | -9.9% |
| 17237 | Mont Alto | Standard | 1,759 | $80,903 | 1.1 | -16.5% |
| 17224 | Fort Loudon | Standard | 1,603 | $114,779 | 40.2 | -25.9% |
| 17214 | Blue Ridge Summit | Standard | 1,143 | $62,188 | 3.9 | -17.9% |
| 17262 | Spring Run | Standard | 1,048 | $87,708 | 35.5 | -40.9% |
| 17263 | State Line | PO Box | 896 | $88,835 | 0.0 | 105.0% |
| 17247 | Quincy | PO Box | 629 | $52,159 | 0.0 | 66.0% |
| 17235 | Marion | PO Box | 622 | — | 0.0 | -12.6% |
| 17246 | Pleasant Hall | Standard | 542 | $74,713 | 1.3 | 313.7% |
| 17271 | Willow Hill | Standard | 527 | $93,075 | 10.3 | 95.2% |
| 17219 | Doylesburg | Standard | 484 | — | 13.4 | 20.1% |
| 17221 | Fannettsburg | Standard | 458 | $62,109 | 13.6 | -13.9% |
| 17254 | Scotland | PO Box | 362 | $140,100 | 0.0 | 8950.0% |
| 17220 | Dry Run | Standard | 347 | $66,359 | 13.6 | 3.0% |
| 17265 | Upperstrasburg | Standard | 300 | $44,844 | 45.2 | -52.3% |
| 17210 | Amberson | PO Box | 242 | $62,344 | 0.0 | 68.1% |
| 17217 | Concord | Standard | 182 | $75,208 | 3.7 | 23.0% |
| 17251 | Roxbury | PO Box | 70 | $92,955 | 0.0 | -59.1% |
| 17232 | Lurgan | Standard | 27 | — | 0.0 | — |
| 17261 | South Mountain | PO Box | 0 | — | 0.0 | -100.0% |
| 17250 | Rouzerville | PO Box | 0 | — | 0.0 | -100.0% |
| 17272 | Zullinger | PO Box | — | — | 0.0 | — |
| 17256 | Shady Grove | PO Box | — | — | 0.0 | — |
| 17231 | Lemasters | PO Box | — | — | 0.0 | — |