Counties in Pennsylvania by natural change, July to June
Philadelphia County had the highest natural change, July to June of 67 counties in 2021, at 2,227. Allegheny County had the lowest, at -3,483. The median was -279 and the figure for Pennsylvania was -25,683. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under -450
- -450 to -190
- -190 to 0
- 0 to 190
- 190 to 930
- 930 and over
Top 40 counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Philadelphia County Estimated | 2,227 | -41.3% |
| 2 | Lancaster County Estimated | 1,107 | -15.8% |
| 3 | Chester County Estimated | 848 | +4.7% |
| 4 | Dauphin County Estimated | 218 | -62.6% |
| 5 | Delaware County Estimated | 141 | -73.6% |
| 6 | Lehigh County Estimated | 66 | -91% |
| 7 | Fulton County Estimated | -42 | -133.3% |
| 8 | Snyder County Estimated | -43 | -514.3% |
| 9 | Cameron County Estimated | -47 | -9.3% |
| 10 | Juniata County Estimated | -51 | -563.6% |
| 11 | Montour County Estimated | -66 | -32% |
| 12 | Potter County Estimated | -67 | +6.9% |
| 13 | Union County Estimated | -77 | -24.2% |
| 14 | Clinton County Estimated | -78 | -500% |
| 15 | Sullivan County Estimated | -79 | -11.3% |
| 16 | Forest County Estimated | -85 | -26.9% |
| 17 | Perry County Estimated | -93 | -1,450% |
| 18 | Bradford County Estimated | -124 | +8.1% |
| 19 | Wyoming County Estimated | -148 | -26.5% |
| 20 | Montgomery County Estimated | -150 | -394.1% |
| 21 | Centre County Estimated | -172 | -142.3% |
| 21 | Huntingdon County Estimated | -172 | -4.9% |
| 21 | Susquehanna County Estimated | -172 | -37.6% |
| 24 | Elk County Estimated | -176 | -40.8% |
| 25 | Tioga County Estimated | -185 | -31.2% |
| 26 | Mifflin County Estimated | -190 | -587.2% |
| 27 | Greene County Estimated | -192 | -36.2% |
| 28 | Clarion County Estimated | -213 | -80.5% |
| 29 | Pike County Estimated | -214 | -41.7% |
| 30 | Jefferson County Estimated | -223 | -134.7% |
| 31 | McKean County Estimated | -225 | -21% |
| 32 | Warren County Estimated | -239 | -47.5% |
| 33 | Cumberland County Estimated | -276 | -436.6% |
| 34 | Adams County Estimated | -279 | -34.8% |
| 35 | Bedford County Estimated | -282 | -101.4% |
| 36 | Columbia County Estimated | -315 | -24.5% |
| 37 | Berks County Estimated | -323 | -189.7% |
| 38 | Indiana County Estimated | -326 | -88.4% |
| 39 | Crawford County Estimated | -333 | -110.8% |
| 40 | Carbon County Estimated | -352 | -11.7% |
| 41 | Armstrong County Estimated | -370 | +3.9% |
| 42 | Wayne County Estimated | -371 | -27.9% |
| 43 | Lebanon County Estimated | -373 | -328.7% |
| 44 | Venango County Estimated | -385 | -39.5% |
| 45 | Franklin County Estimated | -390 | -747.8% |
| 46 | Monroe County Estimated | -396 | -55.9% |
| 47 | Lycoming County Estimated | -454 | -82.3% |
| 48 | Clearfield County Estimated | -477 | -45.9% |
| 49 | York County Estimated | -505 | -406.1% |
| 50 | Somerset County Estimated | -581 | -97.6% |
| 51 | Northumberland County Estimated | -586 | -100.7% |
| 52 | Lawrence County Estimated | -634 | -99.4% |
| 53 | Northampton County Estimated | -700 | -118.8% |
| 54 | Mercer County Estimated | -784 | -67.9% |
| 55 | Butler County Estimated | -787 | -124.9% |
| 56 | Blair County Estimated | -813 | -41.1% |
| 57 | Erie County Estimated | -816 | -146.5% |
| 58 | Lackawanna County Estimated | -842 | -16.3% |
| 59 | Beaver County Estimated | -921 | -36.2% |
| 60 | Fayette County Estimated | -1,004 | -53.5% |
| 61 | Washington County Estimated | -1,045 | -57.1% |
| 62 | Cambria County Estimated | -1,054 | -58.3% |
| 63 | Schuylkill County Estimated | -1,077 | -73.4% |
| 64 | Bucks County Estimated | -1,334 | -31.2% |
| 65 | Luzerne County Estimated | -1,532 | -63.9% |
| 66 | Westmoreland County Estimated | -2,567 | -32.1% |
| 67 | Allegheny County Estimated | -3,483 | -86.1% |
Other periods
About this ranking
Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.
Equals births_july_june minus deaths_july_june for the same place and year. Not a calendar-year figure.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Pennsylvania by natural change, July to June, 2021) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Pennsylvania by natural change, July to June, 2021. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Pennsylvania by natural change, July to June, 2021. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2021.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Pennsylvania by natural change, July to June, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_pennsylvania_by_2021,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Pennsylvania by natural change, July to June, 2021}},
year = {2026},
howpublished = {Data set},
url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Pennsylvania by natural change, July to June, 2021
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
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Rank Counties in Pennsylvania by natural change, July to June using official data, and cite the source.
rank_places {"indicator":"natural_change_july_june","level":"province","within":"Pennsylvania","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=natural_change_july_june&level=province&within=Pennsylvania&limit=10Questions
Which county has the highest natural change, July to June?
Philadelphia County, with 2,227 in 2021, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Allegheny County, with -3,483 in 2021.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.