This is less than a one percent fall in Westmoreland County’s population, from 353,998 in 2020 to 353,057 in 2021.
Westmoreland County had the 11th largest population in Pennsylvania in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
Pennsylvania Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Pike County | 58,591 | 59,952 | 2.3% |
| Forest County | 6,952 | 7,032 | 1.2% |
| Cumberland County | 259,996 | 262,919 | 1.1% |
| Carbon County | 64,751 | 65,412 | 1% |
| Chester County | 534,645 | 538,649 | 0.7% |
| Wayne County | 51,101 | 51,431 | 0.6% |
| Monroe County | 168,248 | 169,273 | 0.6% |
| Sullivan County | 5,838 | 5,868 | 0.5% |
| York County | 456,389 | 458,696 | 0.5% |
| Montgomery County | 856,947 | 860,578 | 0.4% |
| Perry County | 45,821 | 45,986 | 0.4% |
| Schuylkill County | 142,777 | 143,264 | 0.3% |
| Adams County | 103,795 | 104,127 | 0.3% |
| Columbia County | 64,667 | 64,872 | 0.3% |
| Clinton County | 37,350 | 37,465 | 0.3% |
| Luzerne County | 325,057 | 326,053 | 0.3% |
| Dauphin County | 286,544 | 287,400 | 0.3% |
| Lehigh County | 374,504 | 375,539 | 0.3% |
| Franklin County | 155,874 | 156,289 | 0.3% |
| Northampton County | 312,855 | 313,628 | 0.2% |
| Butler County | 193,851 | 194,273 | 0.2% |
| Lancaster County | 552,597 | 553,652 | 0.2% |
| Lebanon County | 143,242 | 143,493 | 0.2% |
| Berks County | 428,694 | 429,342 | 0.2% |
| Washington County | 209,157 | 209,470 | 0.1% |
| Mifflin County | 46,073 | 46,136 | 0.1% |
| Wyoming County | 26,001 | 26,034 | 0.1% |
| Susquehanna County | 38,354 | 38,389 | 0.1% |
| Lackawanna County | 215,516 | 215,663 | 0.1% |
| Bradford County | 59,858 | 59,892 | 0.1% |
| Bucks County | 646,008 | 646,098 | 0% |
| Clarion County | 37,178 | 37,156 | -0.1% |
| Tioga County | 40,969 | 40,929 | -0.1% |
| Bedford County | 47,523 | 47,461 | -0.1% |
| Union County | 42,625 | 42,568 | -0.1% |
| Montour County | 18,115 | 18,087 | -0.2% |
| Fulton County | 14,549 | 14,523 | -0.2% |
| Northumberland County | 91,471 | 91,266 | -0.2% |
| Snyder County | 39,717 | 39,621 | -0.2% |
| Centre County | 157,929 | 157,527 | -0.3% |
| Westmoreland County | 353,998 | 353,057 | -0.3% |
| Indiana County | 83,116 | 82,886 | -0.3% |
| Huntingdon County | 44,030 | 43,889 | -0.3% |
| Mercer County | 110,333 | 109,972 | -0.3% |
| Lycoming County | 113,980 | 113,605 | -0.3% |
| Clearfield County | 80,394 | 80,082 | -0.4% |
| Somerset County | 73,917 | 73,627 | -0.4% |
| Lawrence County | 85,865 | 85,497 | -0.4% |
| Delaware County | 576,388 | 573,849 | -0.4% |
| Crawford County | 83,723 | 83,351 | -0.4% |
| Elk County | 30,927 | 30,783 | -0.5% |
| Erie County | 270,427 | 269,011 | -0.5% |
| Armstrong County | 65,445 | 65,093 | -0.5% |
| Potter County | 16,356 | 16,259 | -0.6% |
| Cambria County | 132,957 | 132,167 | -0.6% |
| Blair County | 122,518 | 121,767 | -0.6% |
| Juniata County | 23,451 | 23,297 | -0.7% |
| Beaver County | 167,732 | 166,624 | -0.7% |
| Venango County | 50,275 | 49,938 | -0.7% |
| Jefferson County | 44,431 | 44,114 | -0.7% |
| Allegheny County | 1,248,717 | 1,238,090 | -0.9% |
| Warren County | 38,480 | 38,134 | -0.9% |
| McKean County | 40,306 | 39,941 | -0.9% |
| Fayette County | 128,393 | 126,931 | -1.1% |
| Greene County | 35,813 | 35,369 | -1.2% |
| Cameron County | 4,519 | 4,459 | -1.3% |
| Philadelphia County | 1,601,005 | 1,576,251 | -1.5% |
ORGANIZATIONS IN THIS STORY
Borough of North Irwin• Grapeville• Rostraver Township• Cook Township• Yukon• Harrison City• Borough of Bolivar• Borough of Hunker• Calumet• Borough of Youngwood• Herminie• Fellsburg• City of New Kensington• Borough of New Alexandria• Borough of Laurel Mountain• Slickville• North Huntingdon Township• Mammoth• Borough of West Newton• Webster• City of Greensburg• Borough of Scottdale• Borough of Southwest Greensburg• City of Monessen• Borough of East Vandergrift• Bradenville• Lawson Heights• Borough of Irwin• East Huntingdon Township• Upper Burrell Township• Norvelt• Hostetter• St. Vincent College• Borough of Adamsburg• Borough of Sutersville• Borough of Latrobe• Borough of New Florence• Collinsburg• Borough of Ligonier• Borough of Vandergrift• Borough of New Stanton• Borough of Seward• City of Jeannette• Borough of Avonmore• Wyano• City of Lower Burrell• Level Green• Loyalhanna• Borough Of Delmont• Millwood• Borough Of Export• Borough Of Arona• City Of Arnold• Crabtree• Borough Of North Belle Vernon• Borough of Youngstown• Borough Of South Greensburg• Borough Of Smithton• Borough Of West Leechburg
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