• county
  • FIPS 42005
  • Largest town: Kittanning

Armstrong County, Pennsylvania

Armstrong County had 63,679 residents in the Census Vintage 2024 estimate, on 653.3 square miles of land. It ranks 40th of 67 in Pennsylvania by population and 34th by land area.

Population
63,679
#40 of 67 in Pennsylvania · #858 in US
Area
653.3 sq mi
#34 of 67 in Pennsylvania · #1,441 in US
Density
97 / sq mi
#41 of 67 in Pennsylvania · #930 in US
Median household income
$61,521
#40 of 67 in Pennsylvania · #1,686 in US

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

Armstrong County within Pennsylvania. Pin: Harrisburg.

Measure from here

Tools and pages that start from Armstrong County

Armstrong County population, land area and income

Armstrong County had 63,679 residents in the Census Vintage 2024 estimate, on 653.3 square miles of land. It ranks 40th of 67 in Pennsylvania by population and 34th by land area. That works out to 97.5 people per square mile, near the US average of 96.3, and above the national county median.

The median county-equivalent in Pennsylvania has 82,953 residents; Armstrong County is somewhat smaller.

Its SAIPE 2023 median household income of $61,521 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

63,679

3144th1st

858th of 3,144 (US)

Land area

653 sq mi

3144th1st

1441st of 3,144 (US)

Density

97.5 / sq mi

3144th1st

930th of 3,144 (US)

Median household income

$61,521

3143rd1st

1686th of 3,143 (US)

Rank within Pennsylvania (67)

Population

63,679

67th1st

40th of 67 (PA)

Land area

653 sq mi

67th1st

34th of 67 (PA)

Density

97.5 / sq mi

67th1st

41st of 67 (PA)

Median household income

$61,521

67th1st

40th of 67 (PA)

How Armstrong County's population changed since 2020

Armstrong County lost 1,781 residents between the July 2020 and July 2024 estimates, a drop of 2.7%. That ranks 61st 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, Armstrong County recorded 2,271 births and 4,076 deaths, a natural change of -1,805. Net international migration added +73 and net domestic migration, people moving to or from other US counties, came to -150. The largest single component was natural change, which removed 1,805 people.

65.5k202065.2k202164.7k202264.1k202363.7k2024
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
2,271
Deaths
4,076
Net international migration
+73
Net domestic migration
-150
Change, July 2023 to July 2024
-415

Where Armstrong County is

The Census internal point of Armstrong County is at 40.812400, -79.464100. 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 Armstrong 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: Armstrong County internal point. Dark pin: Harrisburg.

Internal point

Decimal
40.812400, -79.464100
DMS
40°48'44.64"N 79°27'50.76"W
UTM
17N 629539.4E 4519067.0N
Geohash
dpr2pv8j2
Plus code
87G2RG6P+X9

Towns in Armstrong County

7 incorporated places of 1,000+ people have residents in Armstrong County, 14,354 people together, or 23% of the county. Each figure counts only the part of the town inside Armstrong County; towns marked "part" extend into another county. The largest is Kittanning with 3,920.

  1. 01Kittanning3,920
  2. 02Ford City2,763
  3. 03Leechburg2,075
  4. 04Freeport1,677
  5. 05Apollo1,551
  6. 06North Apollo1,215
  7. 07West Kittanning1,153
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Armstrong County

The Census 2024 county adjacency file lists 5 neighbors for Armstrong County. The most populous is Westmoreland County, PA, with 350,935 residents. Distances run between Census internal points in a straight line.

Distance to Harrisburg and the nearest big city

Harrisburg is 140.7 miles ESE of Armstrong County's internal point in a straight line. The nearest place of 100,000 or more is Pittsburgh, PA (population 307,668), 37.2 miles away. The nearest place of 10,000 or more is Lower Burrell, PA (population 11,542), 20.7 miles away.

Armstrong County FIPS code

The FIPS code of Armstrong County is 42005: state code 42 for Pennsylvania plus county code 005. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $61,521.

Questions people ask

What is the population of Armstrong County, Pennsylvania?

The Census Vintage 2024 estimate for July 1, 2024 is 63,679. That is down 1,781 people (2.7%) from the July 2020 estimate of 65,460.

What is the FIPS code of Armstrong County?

42005. The first two digits (42) are Pennsylvania; the last three (005) identify the county.

What is the largest town in Armstrong County?

Kittanning, with 3,920 residents inside Armstrong County in 2024.

Which counties border Armstrong County?

5 county-equivalents border it in the Census 2024 adjacency file: Westmoreland County, PA; Butler County, PA; Indiana County, PA; Jefferson 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.