• county
  • FIPS 42043
  • Largest town: Harrisburg

Dauphin County, Pennsylvania

Dauphin County had 293,029 residents in the Census Vintage 2024 estimate, on 524.9 square miles of land. It ranks 14th of 67 in Pennsylvania by population and 44th by land area.

Population
293,029
#14 of 67 in Pennsylvania · #250 in US
Area
524.9 sq mi
#44 of 67 in Pennsylvania · #1,994 in US
Density
558 / sq mi
#10 of 67 in Pennsylvania · #257 in US
Median household income
$73,929
#18 of 67 in Pennsylvania · #733 in US

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

Dauphin County within Pennsylvania. Pin: Harrisburg.

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Tools and pages that start from Dauphin County

Dauphin County population, land area and income

Dauphin County had 293,029 residents in the Census Vintage 2024 estimate, on 524.9 square miles of land. It ranks 14th of 67 in Pennsylvania by population and 44th by land area. That works out to 558.3 people per square mile, 5.8 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Pennsylvania has 82,953 residents, so Dauphin County is 3.5 times that size.

Its SAIPE 2023 median household income of $73,929 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

293,029

3144th1st

250th of 3,144 (US)

Land area

525 sq mi

3144th1st

1994th of 3,144 (US)

Density

558.3 / sq mi

3144th1st

257th of 3,144 (US)

Median household income

$73,929

3143rd1st

733rd of 3,143 (US)

Rank within Pennsylvania (67)

Population

293,029

67th1st

14th of 67 (PA)

Land area

525 sq mi

67th1st

44th of 67 (PA)

Density

558.3 / sq mi

67th1st

10th of 67 (PA)

Median household income

$73,929

67th1st

18th of 67 (PA)

How Dauphin County's population changed since 2020

Dauphin County gained 6,312 residents between the July 2020 and July 2024 estimates, a rise of 2.2%. That ranks 11th 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, Dauphin County recorded 13,826 births and 12,835 deaths, a natural change of +991. Net international migration added +6,004 and net domestic migration, people moving to or from other US counties, came to -412. The largest single component was international migration, which added 6,004 people.

286.7k2020288.3k2021289.0k2022290.9k2023293.0k2024
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
13,826
Deaths
12,835
Net international migration
+6,004
Net domestic migration
-412
Change, July 2023 to July 2024
+2,143

Where Dauphin County is

The Census internal point of Dauphin County is at 40.412600, -76.792600. 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 Dauphin 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: Dauphin County internal point. Dark pin: Harrisburg.

Internal point

Decimal
40.412600, -76.792600
DMS
40°24'45.36"N 76°47'33.36"W
UTM
18N 347905.1E 4475096.1N
Geohash
dr1musck6
Plus code
87G5C674+2X

Towns in Dauphin County

12 incorporated places of 1,000+ people have residents in Dauphin County, 87,141 people together, or 30% of the county. Each figure counts only the part of the town inside Dauphin County; towns marked "part" extend into another county. The largest is Harrisburg with 50,649.

  1. 01Harrisburg50,649
  2. 02Middletown9,748
  3. 03Steelton6,358
  4. 04Hummelstown4,542
  5. 05Penbrook3,263
  6. 06Highspire2,734
  7. 07Millersburg2,546
  8. 08Lykens1,874
  9. 09Paxtang1,640
  10. 10Elizabethville1,352
  11. 11Williamstown1,301
  12. 12Royalton1,134
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Dauphin County

The Census 2024 county adjacency file lists 8 neighbors for Dauphin County. The most populous is Lancaster County, PA, with 563,293 residents. Distances run between Census internal points in a straight line.

Distance to Harrisburg and the nearest big city

Harrisburg is 11.3 miles SSW of Dauphin County's internal point in a straight line. The nearest place of 100,000 or more is Allentown, PA (population 127,138), 70.2 miles away. The nearest place of 10,000 or more is Harrisburg, PA (population 50,649), 10.6 miles away.

Dauphin County FIPS code

The FIPS code of Dauphin County is 42043: state code 42 for Pennsylvania plus county code 043. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $73,929.

Questions people ask

What is the population of Dauphin County, Pennsylvania?

The Census Vintage 2024 estimate for July 1, 2024 is 293,029. That is up 6,312 people (2.2%) from the July 2020 estimate of 286,717.

What is the FIPS code of Dauphin County?

42043. The first two digits (42) are Pennsylvania; the last three (043) identify the county.

What is the largest town in Dauphin County?

Harrisburg, with 50,649 residents inside Dauphin County in 2024.

Which counties border Dauphin County?

8 county-equivalents border it in the Census 2024 adjacency file: Lancaster County, PA; York County, PA; Cumberland County, PA; Lebanon County, PA; Schuylkill County, PA; Northumberland County, PA; Perry County, PA; Juniata County, PA.

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.