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| County : | Dauphin County |
| State : | Pennsylvania (PA) |
| Land Area : | 525.04 sq mi |
| Water Area : | 33.13 sq mi |
| Latitude : | 40.4125646 |
| Longitude : | -76.7926343 |
| Population (2010): | 268,100 |
| Population Estimate (2012) : | 267,891 |
| Population Density : | 510.62/sq mi |
| Housing Units (2012) : | 120,406 |
| Median Household Income (2012) : | $54,066 (Pennsylvania : $52,267, USA : $53,046) |
| Median Family Income (2012) : | $68,183 (Pennsylvania : $65,980, USA : $64,585) |
| Median House Price (2012) : | $159,100 (Pennsylvania : $164,900, USA : $181,400) |
Dauphin County Cities / Towns
| Berrysburg Borough (368) | Bressler (1,437) | Colonial Park (13,229) |
| Dauphin Borough (791) | Elizabethville Borough (1,510) | Enhaut (1,007) |
| Gratz Borough (765) | Halifax Borough (841) | Harrisburg City (49,528) |
| Hershey (14,257) | Highspire Borough (2,399) | Hummelstown Borough (4,538) |
| Lawnton (3,813) | Lenkerville (550) | Linglestown (6,334) |
| Lykens Borough (1,779) | Middletown Borough (8,901) | Millersburg Borough (2,557) |
| Oberlin (588) | Palmdale (1,308) | Paxtang Borough (1,561) |
| Paxtonia (5,412) | Penbrook Borough (3,008) | Pillow Borough (298) |
| Progress (9,765) | Royalton Borough (907) | Rutherford (4,303) |
| Skyline View (4,003) | Steelton Borough (5,990) | Union Deposit (407) |
| Wiconsico (921) | Williamstown Borough (1,387) |
Dauphin County Zip Codes
| 17005 (368) | 17017 (1,755) | 17018 (4,313) |
| 17020 (9,047) | 17022 (29,602) | 17023 (3,535) |
| 17028 (3,720) | 17030 (832) | 17032 (8,192) |
| 17033 (16,972) | 17034 (2,414) | 17036 (21,913) |
| 17048 (4,046) | 17057 (21,329) | 17061 (7,157) |
| 17078 (20,218) | 17080 (298) | 17097 (925) |
| 17098 (2,528) | 17101 (2,212) | 17102 (7,628) |
| 17103 (11,848) | 17104 (20,962) | 17109 (23,131) |
| 17110 (24,433) | 17111 (30,714) | 17112 (33,850) |
| 17113 (10,749) | 17980 (3,238) |