Philadelphia County, PA: Cities, ZIP Codes & Population
Philadelphia County in Pennsylvania (FIPS 42101) contains 1 community in our dataset. The largest is Philadelphia, PA, and the listed places add up to roughly 5,649,300 residents. Below you can browse its cities, check its ZIP codes and find nearby counties.
What are the key facts about Philadelphia County?
| County | Philadelphia County |
|---|---|
| State | Pennsylvania |
| FIPS code | 42101 |
| Places in our data | 1 |
| Places with a city page | 1 |
| Combined place estimates | 5,649,300 |
| Largest place | Philadelphia, PA (5,649,300) |
| Rank in state | 1st of 67 counties by combined place population |
| Weighted density | 11,795 per sq mi |
| Time zone | Eastern time |
| ZIP codes | 86 |
Which cities and towns are in Philadelphia County?
Philadelphia County has 1 place large enough for a full page on this site. They are ranked below by estimated population, together with whether each is incorporated, its density in people per square mile and the number of ZIP codes it uses. Philadelphia, PA is the largest.
| Place | Type | Population | Per sq mi | ZIPs |
|---|---|---|---|---|
| Philadelphia, PA | Incorporated | 5,649,300 | 11,795 | 86 |
How large is Philadelphia County compared with other counties in Pennsylvania?
Adding up the estimates for the places in our data gives 5,649,300 people, which ranks Philadelphia County 1st among 67 counties in Pennsylvania. The average listed place has about 5,649,300 residents. The weighted density is about 11,795 people per square mile, which is an urban core by our scale. These totals add up place estimates, so they can differ from the official county population, which includes people outside any listed place. See why population figures differ.
What ZIP codes are in Philadelphia County?
The places in Philadelphia County use 86 ZIP codes: 19019, 19092, 19093, 19099, 19101, 19102, 19103, 19104, 19105, 19106, 19107, 19108, 19109, 19110, 19111, 19112, 19114, 19115, 19116, 19118, 19119, 19120, 19121, 19122, 19123, 19124, 19125, 19126, 19127, 19128, 19129, 19130, 19131, 19132, 19133, 19134, 19135, 19136, 19137, 19138, 19139, 19140, 19141, 19142, 19143, 19144, 19145, 19146, 19147, 19148, 19149, 19150, 19151, 19152, 19153, 19154, 19155, 19160, 19161, 19162 and 26 more. Every code begins with 1, which is assigned to the Mid-Atlantic (Delaware, New York and Pennsylvania). A ZIP code can cross county lines, so a code listed here may also serve addresses in a neighboring county. Use the ZIP code lookup to check a single code, or read how ZIP codes work.
Which counties are near Philadelphia County?
The closest counties by distance between the average locations of their places are listed below. The distance is a rough guide to how close the areas are, because county shapes vary widely.
- Camden County, NJ — about 11 miles southeast (center to center), 325,286 people in listed places
- Delaware County, PA — about 13 miles southwest (center to center), 249,229 people in listed places
- Montgomery County, PA — about 16 miles northwest (center to center), 433,740 people in listed places
- Gloucester County, NJ — about 18 miles south (center to center), 109,717 people in listed places
- Bucks County, PA — about 18 miles north (center to center), 174,465 people in listed places
- Burlington County, NJ — about 20 miles east (center to center), 86,568 people in listed places
What does the FIPS code 42101 mean?
The first two digits, 42, identify Pennsylvania, and the last three, 101, identify Philadelphia County inside that state. Government datasets use this code to join records without confusing counties that share a name. Our guide to counties and FIPS codes explains the numbering, and the Pennsylvania hub lists every county we cover in the state.
Where to go next
Combined place populations are estimates from a compiled dataset and are not official county totals.