• county
  • FIPS 42019
  • Largest town: Butler

Butler County, Pennsylvania

Butler County had 199,341 residents in the Census Vintage 2024 estimate, on 789.5 square miles of land. It ranks 19th of 67 in Pennsylvania by population and 25th by land area.

Population
199,341
#19 of 67 in Pennsylvania · #358 in US
Area
789.5 sq mi
#25 of 67 in Pennsylvania · #1,092 in US
Density
252 / sq mi
#21 of 67 in Pennsylvania · #494 in US
Median household income
$80,978
#9 of 67 in Pennsylvania · #442 in US

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

Butler County within Pennsylvania. Pin: Harrisburg.

Measure from here

Tools and pages that start from Butler County

Butler County population, land area and income

Butler County had 199,341 residents in the Census Vintage 2024 estimate, on 789.5 square miles of land. It ranks 19th of 67 in Pennsylvania by population and 25th by land area. That works out to 252.5 people per square mile, 2.6 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Pennsylvania has 82,953 residents, so Butler County is 2.4 times that size.

Its SAIPE 2023 median household income of $80,978 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

199,341

3144th1st

358th of 3,144 (US)

Land area

789 sq mi

3144th1st

1092nd of 3,144 (US)

Density

252.5 / sq mi

3144th1st

494th of 3,144 (US)

Median household income

$80,978

3143rd1st

442nd of 3,143 (US)

Rank within Pennsylvania (67)

Population

199,341

67th1st

19th of 67 (PA)

Land area

789 sq mi

67th1st

25th of 67 (PA)

Density

252.5 / sq mi

67th1st

21st of 67 (PA)

Median household income

$80,978

67th1st

9th of 67 (PA)

How Butler County's population changed since 2020

Butler County gained 5,272 residents between the July 2020 and July 2024 estimates, a rise of 2.7%. That ranks 8th 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, Butler County recorded 7,191 births and 9,773 deaths, a natural change of -2,582. Net international migration added +708 and net domestic migration, people moving to or from other US counties, came to +7,599. The largest single component was domestic migration, which added 7,599 people.

194.1k2020196.8k2021197.4k2022198.7k2023199.3k2024
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
7,191
Deaths
9,773
Net international migration
+708
Net domestic migration
+7,599
Change, July 2023 to July 2024
+676

Where Butler County is

The Census internal point of Butler County is at 40.913800, -79.919000. It sits in UTM zone 17N. The map shades Pennsylvania's 67 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Butler 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: Butler County internal point. Dark pin: Harrisburg.

Internal point

Decimal
40.913800, -79.919000
DMS
40°54'49.68"N 79°55'8.40"W
UTM
17N 591032.9E 4529750.6N
Geohash
dpr0v2hu0
Plus code
87G2W37J+GC

Towns in Butler County

8 incorporated places of 1,000+ people have residents in Butler County, 28,759 people together, or 14% of the county. Each figure counts only the part of the town inside Butler County; towns marked "part" extend into another county. The largest is Butler with 13,010.

  1. 01Butler13,010
  2. 02Zelienople3,769
  3. 03Slippery Rock3,558
  4. 04Seven Fields2,861
  5. 05Evans City1,686
  6. 06Mars1,415
  7. 07Saxonburg1,378
  8. 08Prospect1,082
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Butler County

The Census 2024 county adjacency file lists 8 neighbors for Butler County. The most populous is Allegheny County, PA, with 1,231,814 residents. Distances run between Census internal points in a straight line.

Distance to Harrisburg and the nearest big city

Harrisburg is 165.4 miles ESE of Butler County's internal point in a straight line. The nearest place of 100,000 or more is Pittsburgh, PA (population 307,668), 32.9 miles away. The nearest place of 10,000 or more is Butler, PA (population 13,010), 3.8 miles away.

Butler County FIPS code

The FIPS code of Butler County is 42019: state code 42 for Pennsylvania plus county code 019. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $80,978.

Questions people ask

What is the population of Butler County, Pennsylvania?

The Census Vintage 2024 estimate for July 1, 2024 is 199,341. That is up 5,272 people (2.7%) from the July 2020 estimate of 194,069.

What is the FIPS code of Butler County?

42019. The first two digits (42) are Pennsylvania; the last three (019) identify the county.

What is the largest town in Butler County?

Butler, with 13,010 residents inside Butler County in 2024.

Which counties border Butler County?

8 county-equivalents border it in the Census 2024 adjacency file: Allegheny County, PA; Westmoreland County, PA; Beaver County, PA; Mercer County, PA; Lawrence County, PA; Armstrong County, PA; Venango County, PA; Clarion 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.