• county
  • FIPS 42101
  • Largest town: Philadelphia

Philadelphia County, Pennsylvania

Philadelphia County had 1,573,916 residents in the Census Vintage 2024 estimate, on 134.3 square miles of land. It is the most populous of Pennsylvania's 67 county-equivalents.

Population
1,573,916
#1 of 67 in Pennsylvania · #26 in US
Area
134.3 sq mi
#66 of 67 in Pennsylvania · #3,069 in US
Density
11,718 / sq mi
#1 of 67 in Pennsylvania · #8 in US
Median household income
$60,196
#46 of 67 in Pennsylvania · #1,821 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Philadelphia County within Pennsylvania. Pin: Harrisburg.

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Philadelphia County population, land area and income

Philadelphia County had 1,573,916 residents in the Census Vintage 2024 estimate, on 134.3 square miles of land. It is the most populous of Pennsylvania's 67 county-equivalents. That works out to 11,717.7 people per square mile, 121.7 times the US average of 96.3, and the 8th highest nationally.

The median county-equivalent in Pennsylvania has 82,953 residents, so Philadelphia County is 19.0 times that size.

Its SAIPE 2023 median household income of $60,196 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

1,573,916

3144th1st

26th of 3,144 (US)

Land area

134 sq mi

3144th1st

3069th of 3,144 (US)

Density

11,717.7 / sq mi

3144th1st

8th of 3,144 (US)

Median household income

$60,196

3143rd1st

1821st of 3,143 (US)

Rank within Pennsylvania (67)

Population

1,573,916

67th1st

1st of 67 (PA)

Land area

134 sq mi

67th1st

66th of 67 (PA)

Density

11,717.7 / sq mi

67th1st

1st of 67 (PA)

Median household income

$60,196

67th1st

46th of 67 (PA)

How Philadelphia County's population changed since 2020

Philadelphia County lost 26,872 residents between the July 2020 and July 2024 estimates, a drop of 1.7%. That ranks 49th of 67 in Pennsylvania for growth. The median Pennsylvania county changed by -0.5%, and the state as a whole by +0.6%.

Since the April 2020 estimates base, Philadelphia County recorded 81,381 births and 67,485 deaths, a natural change of +13,896. Net international migration added +52,292 and net domestic migration, people moving to or from other US counties, came to -97,572. The largest single component was domestic migration, which removed 97,572 people.

1.60M20201.59M20211.57M20221.56M20231.57M2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
81,381
Deaths
67,485
Net international migration
+52,292
Net domestic migration
-97,572
Change, July 2023 to July 2024
+10,567

Where Philadelphia County is

The Census internal point of Philadelphia County is at 40.009400, -75.133300. It sits in UTM zone 18N. The map shades Pennsylvania's 67 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Philadelphia County outlined. Dots are towns of 1,000+ people with residents in it.

Adams County: +4.0%Potter County: -2.4%Sullivan County: +1.6%Bucks County: +0.6%Carbon County: +1.5%McKean County: -2.3%Montour County: -0.1%Fulton County: -0.9%Columbia County: +2.0%Cameron County: -4.1%Elk County: -2.6%Bradford County: -0.4%Bedford County: +0.1%York County: +3.2%Monroe County: -1.1%Forest County: -5.2%Berks County: +2.4%Cambria County: -2.3%Franklin County: +2.1%Snyder County: -0.3%Somerset County: -2.5%Clarion County: -0.9%Indiana County: -0.2%Lackawanna County: +0.6%Wyoming County: -1.0%Lawrence County: -2.0%Mercer County: -2.2%Lehigh County: +3.0%Northampton County: +3.3%Cumberland County: +5.9%Fayette County: -3.6%Jefferson County: -2.5%Centre County: +1.2%Lebanon County: +1.4%Union County: -1.2%Clinton County: +1.3%Chester County: +4.8%Montgomery County: +2.6%Wayne County: +0.5%Pike County: +6.5%Susquehanna County: -0.6%Allegheny County: -1.4%Clearfield County: -2.9%Butler County: +2.7%Beaver County: -1.4%Crawford County: -2.1%Washington County: +0.5%Venango County: -1.7%Warren County: -3.0%Blair County: -2.0%Huntingdon County: -1.6%Lancaster County: +1.9%Luzerne County: +1.9%Westmoreland County: -1.0%Juniata County: -0.4%Armstrong County: -2.7%Tioga County: -0.8%Delaware County: +1.4%Northumberland County: -1.7%Mifflin County: -0.5%Lycoming County: -0.8%Perry County: +2.1%Philadelphia County: -1.7%Schuylkill County: +1.1%Dauphin County: +2.2%Greene County: -5.3%Erie County: -1.1%
Change 2020 to 2024
  1. < -2.2%
  2. < -1.0%
  3. < +0.1%
  4. < +1.9%
  5. ≥ +1.9%
no data

Orange pin: Philadelphia County internal point. Dark pin: Harrisburg.

Internal point

Decimal
40.009400, -75.133300
DMS
40°00'33.84"N 75°07'59.88"W
UTM
18N 488623.1E 4428809.0N
Geohash
dr4ed73xe
Plus code
87G62V58+QM

Towns in Philadelphia County

One incorporated place of 1,000+ people has residents in Philadelphia County, 1,573,916 people together, or 100% of the county. Each figure counts only the part of the town inside Philadelphia County; towns marked "part" extend into another county. The largest is Philadelphia with 1,573,916.

  1. 01Philadelphia1,573,916
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Philadelphia County

The Census 2024 county adjacency file lists 6 neighbors for Philadelphia County, including 3 across a state line. The most populous is Montgomery County, PA, with 879,190 residents. Distances run between Census internal points in a straight line.

Distance to Harrisburg and the nearest big city

Harrisburg is 94.1 miles WNW of Philadelphia County's internal point in a straight line. The nearest place of 100,000 or more is Philadelphia, PA (population 1,573,916), 0.0 miles away.

Philadelphia County FIPS code

The FIPS code of Philadelphia County is 42101: state code 42 for Pennsylvania plus county code 101. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $60,196.

Questions people ask

What is the population of Philadelphia County, Pennsylvania?

The Census Vintage 2024 estimate for July 1, 2024 is 1,573,916. That is down 26,872 people (1.7%) from the July 2020 estimate of 1,600,788.

What is the FIPS code of Philadelphia County?

42101. The first two digits (42) are Pennsylvania; the last three (101) identify the county.

What is the largest town in Philadelphia County?

Philadelphia, with 1,573,916 residents inside Philadelphia County in 2024.

Which counties border Philadelphia County?

6 county-equivalents border it in the Census 2024 adjacency file: Montgomery County, PA; Bucks County, PA; Delaware County, PA; Camden County, NJ; Burlington County, NJ; Gloucester County, NJ.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.