Counties in Pennsylvania by natural change, July to June
Philadelphia County had the highest natural change, July to June of 67 counties in 2015, at 8,621. Westmoreland County had the lowest, at -1,429. The median was -48 and the figure for Pennsylvania was 9,157. Source: the U.S. Census Bureau.
Map of counties, 2015
- Under -200
- -200 to -100
- -100 to 0
- 0 to 100
- 100 to 800
- 800 and over
Top 40 counties, 2015
Full ranking
| Rank | Counties | 2015 | Change on 2014 |
|---|---|---|---|
| 1 | Philadelphia County Estimated | 8,621 | -7.2% |
| 2 | Lancaster County Estimated | 2,127 | -9.1% |
| 3 | Chester County Estimated | 1,831 | -1.7% |
| 4 | Delaware County Estimated | 1,371 | -5.2% |
| 5 | Montgomery County Estimated | 1,225 | -39% |
| 6 | Dauphin County Estimated | 965 | -2.1% |
| 7 | Berks County Estimated | 891 | -22.5% |
| 8 | York County Estimated | 801 | -29.1% |
| 9 | Lehigh County Estimated | 583 | -33.7% |
| 10 | Centre County Estimated | 317 | +5% |
| 11 | Franklin County Estimated | 280 | -41.7% |
| 12 | Cumberland County Estimated | 233 | -42.6% |
| 12 | Erie County Estimated | 233 | -36.2% |
| 14 | Lebanon County Estimated | 231 | -11.5% |
| 15 | Snyder County Estimated | 123 | +623.5% |
| 16 | Perry County Estimated | 77 | -34.2% |
| 17 | Union County Estimated | 69 | +213.6% |
| 18 | Clinton County Estimated | 54 | +390.9% |
| 19 | Juniata County Estimated | 31 | +675% |
| 20 | Mifflin County Estimated | 20 | -13% |
| 21 | Tioga County Estimated | 17 | +147.2% |
| 22 | Montour County Estimated | 1 | +106.7% |
| 23 | Adams County Estimated | -2 | -102% |
| 24 | Cameron County Estimated | -6 | -500% |
| 24 | Clarion County Estimated | -6 | +40% |
| 26 | Potter County Estimated | -7 | +65% |
| 27 | Lycoming County Estimated | -8 | -214.3% |
| 28 | Monroe County Estimated | -17 | -206.3% |
| 29 | Wyoming County Estimated | -22 | -210% |
| 30 | Bradford County Estimated | -23 | -118.9% |
| 31 | Greene County Estimated | -40 | -4,100% |
| 32 | Sullivan County Estimated | -44 | +20% |
| 33 | Huntingdon County Estimated | -47 | -38.2% |
| 34 | Forest County Estimated | -48 | +2% |
| 34 | Fulton County Estimated | -48 | -433.3% |
| 36 | Susquehanna County Estimated | -60 | -22.4% |
| 37 | Jefferson County Estimated | -64 | -166.7% |
| 38 | Pike County Estimated | -84 | +17.6% |
| 39 | Bedford County Estimated | -97 | +4.9% |
| 40 | Warren County Estimated | -99 | +6.6% |
| 41 | McKean County Estimated | -101 | -32.9% |
| 42 | Crawford County Estimated | -106 | +7.8% |
| 43 | Elk County Estimated | -115 | -113% |
| 44 | Columbia County Estimated | -125 | -155.1% |
| 45 | Venango County Estimated | -132 | -41.9% |
| 46 | Clearfield County Estimated | -138 | +28.9% |
| 46 | Indiana County Estimated | -138 | -430.8% |
| 48 | Butler County Estimated | -139 | -39% |
| 49 | Wayne County Estimated | -183 | -6.4% |
| 50 | Bucks County Estimated | -184 | -282.2% |
| 51 | Northumberland County Estimated | -224 | -39.1% |
| 52 | Armstrong County Estimated | -239 | -32% |
| 53 | Northampton County Estimated | -256 | -556.4% |
| 54 | Carbon County Estimated | -275 | -39.6% |
| 55 | Lawrence County Estimated | -281 | -27.1% |
| 56 | Blair County Estimated | -303 | -19.8% |
| 57 | Mercer County Estimated | -322 | -31.4% |
| 58 | Somerset County Estimated | -362 | -28.8% |
| 59 | Fayette County Estimated | -397 | -11.8% |
| 60 | Beaver County Estimated | -522 | -27.3% |
| 61 | Lackawanna County Estimated | -532 | -17.7% |
| 62 | Schuylkill County Estimated | -587 | -23.6% |
| 63 | Cambria County Estimated | -588 | -45.9% |
| 64 | Washington County Estimated | -606 | -30.6% |
| 65 | Luzerne County Estimated | -945 | -11.7% |
| 66 | Allegheny County Estimated | -993 | -436.8% |
| 67 | Westmoreland County Estimated | -1,429 | -9.1% |
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, 2015) [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, 2015. 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=2015. 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, 2015. 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=2015.
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, 2015 [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=2015 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_pennsylvania_by_2015,
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, 2015}},
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=2015. 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, 2015
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=2015
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/pennsylvania-counties?period=2015.
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 8,621 in 2015, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Westmoreland County, with -1,429 in 2015.
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.