Montgomery County, Pennsylvania Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 3rd-largest in Pennsylvania

The population of Montgomery County, Pennsylvania is 861,225 as of the 2023 American Community Survey, making it the 3rd-largest county in Pennsylvania. The median household income is $111,521, the median home value is $409,900, and the median age is 41.1.

The population of Montgomery County has grown 9.8% since 2010 (800,881 → 879,190), a +0.67% annualized rate.

Montgomery County within Pennsylvania · Source: US Census TIGER/Line via us-atlas

861,225

Population

+0.67%

Annual growth

1783

People / sq mi

$111,521

Median Income

$409,900

Median Home Value

Montgomery County covers 483 sq mi of land at 1783.3 people per square mile.

About Montgomery County, PA

Montgomery County is a county in Pennsylvania with a population of 861,225. It ranks #3 among counties in Pennsylvania by population. The median age is 41.1, older than the national median. The population is 49.0% male and 51.0% female.

The median household income in Montgomery County is $111,521, above the US median of $74,580. 4.2% of residents live below the federal poverty level. Home values sit at a median of $409,900, with monthly rent averaging $1,612. The homeownership rate of 71.7% is higher than the national rate of 64.8%.

Educational attainment in Montgomery County reflects 52.3% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 21.1% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 27.9 minutes each way.

Montgomery County Population History (2010-2024)

The county of Montgomery County had a population of 800,881 in 2010 and 879,190 in 2024, a 9.8% growth over 14 years. The peak was 879,190 in 2024. Average annual growth rate: 0.67%.

879,190

Population (2024)

800,881

Population (2010)

879,190

Peak (2024)

0.67%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	800,881	-	-	estimate
2011	805,333	+4,452	+0.56%	estimate
2012	808,782	+3,449	+0.43%	estimate
2013	812,750	+3,968	+0.49%	estimate
2014	815,966	+3,216	+0.40%	estimate
2015	817,432	+1,466	+0.18%	estimate
2016	820,106	+2,674	+0.33%	estimate
2017	824,533	+4,427	+0.54%	estimate
2018	826,995	+2,462	+0.30%	estimate
2019	830,397	+3,402	+0.41%	estimate
2020	856,900	+26,503	+3.19%	estimate
2021	864,252	+7,352	+0.86%	estimate
2022	865,848	+1,596	+0.18%	estimate
2023	871,673	+5,825	+0.67%	estimate
2024	879,190	+7,517	+0.86%	estimate

Race & Ethnicity

White	74.4%
Black or African American	9.3%
Asian	0.0%
Hispanic or Latino (any race)	0.8%
Two or More Races	0.0%

Age & Sex

41.1

Median Age

51.0%

Female

49.0%

Male

18.4%

Age 65+

Age Distribution

Under 5

5.3%

5–9

6.0%

10–14

6.2%

15–19

6.3%

20–24

5.6%

25–34

12.3%

35–44

13.3%

45–54

12.7%

55–59

6.7%

60–64

7.1%

65–74

10.5%

75–84

5.3%

85+

2.6%

Children (under 15): 17.5% · Seniors (65+): 18.4%

Income & Poverty

Median household income	$111,521+$35,440 vs state
Mean household income	$154,372
Per-capita income	$60,507
Poverty rate	4.2%-3.9% vs state
Unemployment rate	3.0%
Employment-to-population	64.9%

Top Industries by Employment

Professional & business services

25.6%

Finance & real estate

15.6%

Manufacturing

11.7%

Information

9.7%

Education & health care

6.5%

Construction

5.6%

Arts, entertainment & food

4.5%

Retail trade

3.5%

The largest employment sector in Montgomery County is professional & business services, accounting for 25.6% of workers.

How residents commute

3.0%

Drive alone

2.0%

Carpool

66.6%

Public transit

21.1%

Work from home

27.9 min

Avg commute

Housing

$409,900+$169,400 vs state

Median home value

$1,612

Median rent

71.7%

Homeownership rate

348,696

Total housing units

95.6%

Occupied

4.4%

Vacant

28.3%

Renter-occupied

Social & access

96.0%

With health insurance

96.4%

With broadband internet

18.9%

Foreign-born

4.9%

Veterans (18+)

10.4%

With a disability

85.5%

Speak language other than English at home

Education

94.9%

High School+

52.3%

Bachelor's+

Largest cities in Pennsylvania

Philadelphia (1,582,432)Pittsburgh (303,620)Allentown (125,320)Reading (94,836)Erie (94,156)Bethlehem (77,069)Scranton (76,074)Lancaster (57,683)Levittown (50,930)Harrisburg (50,092)All Pennsylvania cities →

Other counties in Pennsylvania

Philadelphia County (1,582,432)Allegheny County (1,240,476)Bucks County (645,993)Delaware County (576,195)Lancaster County (555,151)Chester County (540,896)York County (459,312)Berks County (429,989)Lehigh County (375,408)Westmoreland County (353,345)All Pennsylvania counties →

Part of Pennsylvania

Pennsylvania demographic profile All Pennsylvania data →

Metro areas in Pennsylvania

Philadelphia (6,241,882)Pittsburgh (2,443,921)Allentown (866,764)Harrisburg (597,894)Scranton (567,887)Lancaster (555,151)York (459,312)Reading (429,989)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Common questions about Montgomery County, PA

What is the population of Montgomery County, PA?What is the median household income in Montgomery County, PA?What is the median home value in Montgomery County, PA?What are the demographics of Montgomery County, PA?What is the cost of living in Montgomery County, PA?Is Montgomery County, PA growing?

Frequently Asked Questions

Montgomery County, Pennsylvania has a population of 861,225 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 3rd-largest county in Pennsylvania. Population density is 1783 people per square mile.

The population of Montgomery County has grown 9.8% since 2010 (800,881 → 879,190), a +0.67% annualized rate.

The median household income in Montgomery County, Pennsylvania is $111,521, with mean (average) household income of $154,372 and per-capita income of $60,507. 4.2% of residents live below the federal poverty level.

In Montgomery County, the largest racial and ethnic groups are White (74.4%), Black or African American (9.3%), Hispanic or Latino (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Montgomery County, Pennsylvania is 41.1 years. Residents are 51.0% female and 49.0% male.

The median home value in Montgomery County is $409,900 and median monthly rent is $1,612. 71.7% of occupied housing units are owner-occupied. The county has 348,696 total housing units, 4.4% of which are vacant.

The largest employment sector in Montgomery County, Pennsylvania is professional, scientific, and management services, employing 25.6% of workers. The unemployment rate is 3.0%.

Philadelphia is among the largest cities associated with Montgomery County, Pennsylvania, with a population of 1,582,432.