| ZIP Codes: | 18 ZIP Codes (9 Standard, 9 PO Box, 0 Unique) [See All] |
| Area Codes: | 223 / 717 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:32 PM |
| Population: | 147,103 [See All] |
| FIPS: | 42075 |
| CBSA: | Lebanon, PA |
| Land Area: | 363 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 40.3332, -76.4315 |
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147,103 residents live across 18 ZIPs covering 363 sq mi, served by 17 distinct USPS-recognized cities.
Population moved from 137,181 to 147,103 from 2014 to 2024 — a +7.2% change. 13 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 17064 (Mount Gretna, $130,417 median) and poorest ZIP 17016 (Cornwall, $56,933) are 3.4 miles apart — a 2.3× income gap across local geography.
Median home values vary 2.3× across this county — from $166,100 in 17016 (Cornwall) to $373,800 in 17064 (Mount Gretna).
Density varies 12× across the county — from 123 people/sq mi in 17026 (Fredericksburg) to 1,536 in 17064 (Mount Gretna).
Educational attainment ranges from 13.2% bachelor's+ in 17046 (Lebanon) to 40.0% in 17016 (Cornwall) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #24 most populous of 67 counties and ranks #12 for median household income with the #5 fastest decade growth .
Weighted by population, the typical household earns about $78,662 across the county — reflecting what a typical resident sees, not a simple ZIP average.
24.6% of adults age 25+ hold a bachelor's degree or higher (24,997 of 101,682 reporting).
9 Standard delivery, 9 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 17042 | Lebanon | Standard | 40,161 | $74,831 | 66.7 | 8.7% |
| 17046 | Lebanon | Standard | 31,835 | $62,221 | 39.1 | 3.1% |
| 17078 | Palmyra | Standard | 23,840 | $93,135 | 28.9 | 14.3% |
| 17067 | Myerstown | Standard | 15,815 | $76,183 | 47.4 | 10.7% |
| 17003 | Annville | Standard | 12,534 | $92,209 | 43.6 | 6.8% |
| 17038 | Jonestown | Standard | 8,394 | $75,417 | 66.5 | 1.0% |
| 17073 | Newmanstown | Standard | 6,314 | $91,452 | 30.0 | 16.9% |
| 17026 | Fredericksburg | Standard | 3,137 | $102,663 | 25.4 | -19.1% |
| 17087 | Richland | Standard | 2,370 | $93,150 | 13.6 | -25.1% |
| 17016 | Cornwall | PO Box | 909 | $56,933 | 0.0 | 46.6% |
| 17064 | Mount Gretna | PO Box | 839 | $130,417 | 0.5 | 120.2% |
| 17088 | Schaefferstown | PO Box | 459 | $113,933 | 0.5 | -27.3% |
| 17041 | Lawn | PO Box | 190 | $86,397 | 0.0 | 175.4% |
| 17010 | Campbelltown | PO Box | 160 | — | 0.0 | — |
| 17077 | Ono | PO Box | 108 | $52,656 | 0.0 | 440.0% |
| 17039 | Kleinfeltersville | PO Box | 38 | — | 0.8 | 72.7% |
| 17085 | Rexmont | PO Box | — | — | 0.0 | — |
| 17083 | Quentin | PO Box | — | — | 0.0 | — |