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Montgomery County, PA Demographics

Montgomery County, PA is the 3rd most populous of 67 counties in Pennsylvania, with 856,553 residents across 483 square miles. That is about 1,774 people per square mile.

At the 2020 census

Population 856,553
Land area 483 sq mi
Density 1,774 / sq mi

Data: 2020 Census · American Community Survey 2024

How Montgomery County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Montgomery County, PA

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Montgomery County, PA — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Montgomery County, PA

Name Population Sq mi Per sq mi
Census Tract 2078 8,350 20.3 412
Census Tract 2006.02 8,218 3.3 2,527
Census Tract 2070.01 8,059 10.6 762
Census Tract 2086.01 7,658 11.1 693
Census Tract 2032.04 7,350 3.2 2,306
Census Tract 2068.01 7,192 11.8 610
Census Tract 2067.04 6,980 8.3 842
Census Tract 2005.05 6,940 7.0 990
Census Tract 2061.07 6,775 3.5 1,943
Census Tract 2003.01 6,749 1.6 4,268
Census Tract 2034.02 6,606 2.6 2,538
Census Tract 2086.03 6,555 6.7 984
Census Tract 2012.01 6,474 5.3 1,227
Census Tract 2035 6,365 0.7 9,455
Census Tract 2034.01 6,348 1.9 3,402
Census Tract 2006.05 6,280 3.7 1,711
Census Tract 2025 6,260 2.1 3,042
Census Tract 2086.04 6,245 4.8 1,305
Census Tract 2033.02 6,197 2.9 2,112
Census Tract 2061.05 6,187 5.4 1,156
Census Tract 2007.08 6,146 2.8 2,175
Census Tract 2071.01 6,133 9.2 669
Census Tract 2060.07 6,093 4.1 1,473
Census Tract 2107 6,048 5.3 1,136
Census Tract 2069.04 6,018 3.0 1,982
Census Tract 2038.03 5,956 0.3 20,356
Census Tract 2031.05 5,888 3.0 1,955
Census Tract 2091 5,870 5.1 1,160
Census Tract 2010.04 5,857 1.3 4,478
Census Tract 2019.02 5,833 1.7 3,535
Census Tract 2005.02 5,653 1.3 4,331
Census Tract 2060.04 5,626 2.3 2,484
Census Tract 2055.03 5,610 0.9 6,033
Census Tract 2058.08 5,586 1.9 2,960
Census Tract 2049 5,540 4.0 1,398
Census Tract 2005.07 5,422 2.8 1,915
Census Tract 2048 5,406 6.0 894
Census Tract 2083.04 5,307 3.7 1,451
Census Tract 2010.03 5,245 2.7 1,969
Census Tract 2009.03 5,193 0.8 6,237
Census Tract 2083.03 5,143 5.1 1,009
Census Tract 2014.06 5,085 2.3 2,194
Census Tract 2019.01 5,066 2.0 2,596
Census Tract 2082.03 5,050 3.0 1,685
Census Tract 2063 5,043 1.6 3,208
Census Tract 2057 5,015 0.7 7,609
Census Tract 2045 4,988 1.1 4,722
Census Tract 2024.02 4,957 1.1 4,708
Census Tract 2104 4,946 1.5 3,305
Census Tract 2016.08 4,944 1.9 2,551
Census Tract 2046 4,941 1.9 2,624
Census Tract 2014.04 4,868 3.4 1,443
Census Tract 2085 4,830 8.0 603
Census Tract 2022.01 4,821 1.2 3,917
Census Tract 2065.02 4,812 2.8 1,741
Census Tract 2087.04 4,810 2.5 1,899
Census Tract 2054.02 4,794 1.4 3,540
Census Tract 2016.03 4,770 0.9 5,108
Census Tract 2017.06 4,743 1.0 4,858
Census Tract 2021 4,719 0.6 8,047
Census Tract 2009.01 4,681 0.8 5,798
Census Tract 2070.04 4,659 1.6 2,831
Census Tract 2007.03 4,656 2.6 1,823
Census Tract 2069.05 4,632 3.2 1,434
Census Tract 2072.02 4,625 0.8 6,121
Census Tract 2105 4,580 1.3 3,510
Census Tract 2023.01 4,544 1.1 4,229
Census Tract 2017.05 4,530 0.7 6,323
Census Tract 2061.06 4,524 2.1 2,111
Census Tract 2060.05 4,502 1.7 2,598
Census Tract 2004.02 4,497 0.7 6,814
Census Tract 2041.01 4,493 0.5 9,355
Census Tract 2056 4,492 0.5 8,933
Census Tract 2031.04 4,484 1.6 2,730
Census Tract 2006.07 4,470 1.4 3,281
Census Tract 2005.06 4,458 3.1 1,424
Census Tract 2001.04 4,446 2.2 1,990
Census Tract 2014.09 4,423 2.3 1,892
Census Tract 2069.01 4,421 1.6 2,809
Census Tract 2014.08 4,400 2.4 1,863
Census Tract 2001.03 4,396 2.0 2,150
Census Tract 2101 4,384 1.1 4,124
Census Tract 2007.07 4,347 3.0 1,444
Census Tract 2032.03 4,262 2.0 2,174
Census Tract 2106 4,256 1.2 3,605
Census Tract 2067.03 4,239 3.0 1,417
Census Tract 2089.06 4,194 0.5 8,891
Census Tract 2003.08 4,184 0.7 6,138
Census Tract 2058.10 4,179 1.3 3,314
Census Tract 2065.01 4,147 2.1 1,972
Census Tract 2071.03 4,093 2.7 1,500
Census Tract 2005.01 4,091 3.0 1,345
Census Tract 2033.03 4,055 1.5 2,649
Census Tract 2036.02 4,037 0.4 9,426
Census Tract 2076 4,010 12.9 311
Census Tract 2064 4,002 2.1 1,942
Census Tract 2103 4,002 1.9 2,125
Census Tract 2039.02 3,988 0.6 7,082
Census Tract 2061.04 3,938 3.5 1,136
Census Tract 2087.03 3,936 2.6 1,492

Showing the 100 most populous of 219 — the rest are shown on the map.

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →