Counties in Pennsylvania by natural change, July to June
Philadelphia County had the highest natural change, July to June of 67 counties in 2020, at 3,793. Westmoreland County had the lowest, at -1,943. The median was -141 and the figure for Pennsylvania was -9,543. Source: the U.S. Census Bureau.
Map of counties, 2020
- Under -310
- -310 to -130
- -130 to 0
- 0 to 140
- 140 to 630
- 630 and over
Top 40 counties, 2020
Full ranking
| Rank | Counties | 2020 | Change on 2019 |
|---|---|---|---|
| 1 | Philadelphia County Estimated | 3,793 | -27.4% |
| 2 | Lancaster County Estimated | 1,314 | -24.7% |
| 3 | Chester County Estimated | 810 | -36.2% |
| 4 | Lehigh County Estimated | 736 | -17.4% |
| 5 | Dauphin County Estimated | 583 | -22.5% |
| 6 | Delaware County Estimated | 534 | -48.1% |
| 7 | Berks County Estimated | 360 | -48.2% |
| 8 | York County Estimated | 165 | -68.5% |
| 9 | Cumberland County Estimated | 82 | -65.1% |
| 10 | Montgomery County Estimated | 51 | -93% |
| 11 | Mifflin County Estimated | 39 | +2.6% |
| 12 | Juniata County Estimated | 11 | -70.3% |
| 13 | Perry County Estimated | -6 | -111.5% |
| 14 | Snyder County Estimated | -7 | -108.9% |
| 15 | Clinton County Estimated | -13 | -62.5% |
| 16 | Fulton County Estimated | -18 | -357.1% |
| 17 | Cameron County Estimated | -43 | -19.4% |
| 18 | Franklin County Estimated | -46 | -132.9% |
| 19 | Montour County Estimated | -50 | -56.3% |
| 20 | Union County Estimated | -62 | -277.1% |
| 21 | Forest County Estimated | -67 | -26.4% |
| 22 | Centre County Estimated | -71 | -175.5% |
| 22 | Sullivan County Estimated | -71 | -10.9% |
| 24 | Potter County Estimated | -72 | -63.6% |
| 25 | Lebanon County Estimated | -87 | -93.3% |
| 26 | Jefferson County Estimated | -95 | +15.2% |
| 27 | Wyoming County Estimated | -117 | -7.3% |
| 28 | Clarion County Estimated | -118 | -31.1% |
| 29 | Elk County Estimated | -125 | -25% |
| 29 | Susquehanna County Estimated | -125 | +18.3% |
| 31 | Bradford County Estimated | -135 | -125% |
| 32 | Bedford County Estimated | -140 | -81.8% |
| 33 | Greene County Estimated | -141 | -48.4% |
| 33 | Tioga County Estimated | -141 | -72% |
| 35 | Pike County Estimated | -151 | +9.6% |
| 36 | Crawford County Estimated | -158 | -31.7% |
| 37 | Warren County Estimated | -162 | -48.6% |
| 38 | Huntingdon County Estimated | -164 | -47.7% |
| 39 | Indiana County Estimated | -173 | -54.5% |
| 40 | McKean County Estimated | -186 | -6.3% |
| 41 | Adams County Estimated | -207 | -24.7% |
| 42 | Lycoming County Estimated | -249 | -71.7% |
| 43 | Columbia County Estimated | -253 | -27.8% |
| 44 | Monroe County Estimated | -254 | -290.8% |
| 45 | Venango County Estimated | -276 | -85.2% |
| 46 | Wayne County Estimated | -290 | -37.4% |
| 47 | Northumberland County Estimated | -292 | -16.8% |
| 48 | Somerset County Estimated | -294 | -30.7% |
| 49 | Carbon County Estimated | -315 | -39.4% |
| 50 | Lawrence County Estimated | -318 | -24.7% |
| 51 | Northampton County Estimated | -320 | -51.7% |
| 52 | Clearfield County Estimated | -327 | -34% |
| 53 | Erie County Estimated | -331 | -136.4% |
| 54 | Butler County Estimated | -350 | -70.7% |
| 55 | Armstrong County Estimated | -385 | -25.8% |
| 56 | Mercer County Estimated | -467 | -10.9% |
| 57 | Blair County Estimated | -576 | -29.7% |
| 58 | Schuylkill County Estimated | -621 | -12.3% |
| 59 | Fayette County Estimated | -654 | -29.8% |
| 60 | Washington County Estimated | -665 | -33.5% |
| 61 | Cambria County Estimated | -666 | -7.8% |
| 62 | Beaver County Estimated | -676 | -18.6% |
| 63 | Lackawanna County Estimated | -724 | -30.5% |
| 64 | Luzerne County Estimated | -935 | -38.7% |
| 65 | Bucks County Estimated | -1,017 | -88.3% |
| 66 | Allegheny County Estimated | -1,872 | -167.4% |
| 67 | Westmoreland County Estimated | -1,943 | -13% |
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, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.
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, 2020 [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=2020 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_pennsylvania_by_2020,
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, 2020}},
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=2020. 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, 2020
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=2020
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2020.
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
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
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 3,793 in 2020, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Westmoreland County, with -1,943 in 2020.
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.