PENNSYLVANIA
POPULATION DENSITY
People per square mile, 2010: 274.0
People per square mile, 2020: 290.6
HISTORIC & PROJECTED GROWTH 1790 TO 2040
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Sources: Census figures from U.S. Bureau of the Census & *Estimates from Weldon Cooper Center, Demographics Research Group
(The Census Bureau and Weldon Cooper Center have not yet provided updated State projections to reflect 2020 census numbers.)
Population by County
SOURCE: U.S. Bureau of the Census
Population News Articles
Most Pittsburgh-area communities are losing residents – here’s why that might be OK - June 12, 2026
How Trump’s $700M to the coal industry could impact Pennsylvania – June 8, 2026
Shapiro unveils standards for data center projects in Pennsylvania – May 28, 2026
Longstanding Pennsylvania Partnership Celebrates the Planting of the 10 Millionth Tree in Hummelstown – May 26, 2026
What percent of the workforce in Pennsylvania are immigrants? – May 13, 2026
3 Pa. counties rank among nation’s worst for air pollution, study finds – April 22, 2026
A new Pennsylvania network aims to help communities build climate resiliency – Mar 13, 2026
Former PA politician warns EPA rollback could worsen poor air quality – Mar 12, 2026
Officials warn ICE detention centers in Pa. could overwhelm sewer, other critical services – Feb 23, 2026
Chester County Home to One of the Pennsylvania’s Fastest-Growing ‘Cities’ – Feb 20, 2026
Pennsylvania Immigration Survey – Feb 18, 2026
Closer Look at Population of Pennsylvania in 2025 – Feb 5, 2026
Pa. attorney general files criminal charge against fracking company – Oct 31, 2025
Pennsylvania Community Groups Urge Officials to Restrict Data Center Development – Oct 20, 2025
3 Pennsylvania cities ranked among worst places to live for people with asthma – Oct 17, 2025
Report: Pennsylvania continues growing older as population growth rate slows – Oct 10, 2025
Biggest sources of immigrants to Pennsylvania – Oct 10, 2025
Warehouse roofs could help Pennsylvania meet renewable energy goals, House panel hears – Oct 6, 2025
Key takeaways about Pa. and the Lehigh Valley from the new Census population estimates – July 2, 2025
Susquehanna basin falling short on climate prep, study says – June 30, 2025
Groups say years after Pa.’s landmark fracking report, public health goals remain largely unmet – June 27, 2025
Air pollution is ‘keeping kids out of school’ in Allegheny County, study shows – June 24, 2025
Birds in Pennsylvania and nationwide are vanishing fast – June 23, 2025
More agencies are helping ICE in Pennsylvania – June 17, 2025
Pennsylvania to get nearly $1 billion in federal funds for climate-smart ag practices – Dec 16, 2024
Environmental justice communities in southwestern Pennsylvania face higher rates of pollution violations – Dec 12, 2024
‘I have to live in a cocoon’: locals in Pennsylvania feel ‘sacrificed’ for Shell plastics plant – Dec 11, 2024
Dozens rally, call for Mayor Cherelle Parker to reaffirm Philly’s sanctuary city protections – Dec 10, 2024
Pennsylvania: Map Shows Which Counties Are Gaining, Losing Population – Dec 6, 2024
Building prosperity: How immigrants drive Pennsylvania’s economic growth – Nov 19, 2024
Pennsylvania, Maryland Seek Tighter Rules for Spreading Food Processing Waste – Sept 20, 2024
Pa. Senate votes to repeal climate program – Sept 17, 2024
How volunteers are restoring Pennsylvania’s trails to withstand climate change – Sept 3, 2024
HOW THE SUPREME COURT’S ‘GOOD NEIGHBOR’ RULING COULD IMPACT AIR QUALITY IN PENNSYLVANIA – July 11, 2024
IN U.S., OVERALL EMISSIONS DOWN AS OIL AND GAS PRODUCTION RISES — BUT IN PA. REGION, EMISSIONS ARE UP – July 11, 2024
Where are the 14 fastest growing towns in Pennsylvania? See if your hometown made the list – July 8, 2024
County votes for 'non-sanctuary' status to protect residents from illegal immigration – June 20, 2024
CLIMATE CHANGE IS MAKING HEAT WAVES LIKE THIS WEEK’S MORE COMMON AND SEVERE IN PA. – June 19, 2024
Pennsylvania Commits to Preserving Farmland with $9.8 Million Investment – June 16, 2024
Pennsylvania to See Increase in Extreme Weather Events – November 17, 2023
Pa. leads the nation for Lyme disease cases. Development in forests boosts the risk – November 13, 2023
HOW LAWN CARE IS CAUSING EXTREME AIR POLLUTION IN PA. – November 8, 2023
At Shippensburg University, Latino community members talk about climate change challenges, possible solutions – November 2, 2023
“Forever chemicals” in Pennsylvania fracking wells could impact health of surrounding communities: Report – October 25. 2023
Center for Rural Pennsylvania releases Pa. population projections through 2050 – October 16, 2023
Report: Central PA is eighth most polluted area in United States – July 3, 2023
FirstEnergy Developing Pollinator Habitat Along Pennsylvania Transmission Line – July 13, 2023
Penn State study aims to help Pa. dairy farmers cut methane — and show carbon offsets are real – July 19, 2023
Pittsburgh-area hospitals tackling climate emissions, pollution and waste – July 25, 2023
Air quality is better, but lung association still gives Bucks an “F” – July 20, 2023
Pennsylvania now has limits on forever chemicals, ahead of federal standards – January 17, 2023
As Pennsylvania loses more residents, central PA tips the scale in the other direction – January 11, 2023
Gas company pleads no contest in Pennsylvania fracking pollution case, but fracking allowed to resume – January 11, 2023
Slippy slopes: Pittsburgh, built on slide-prone riverbanks, could face a deluge of impacts from climate change – January 5, 2023
Pa. 5th most populous state in 2022 despite population decline: Census Bureau – December 22, 2022
With millions in federal funding, PennDOT charges ahead on EV infrastructure development in Pa. – July 28, 2022
What to know about Pa. DEP’s newest plan to reduce pollution to the Chesapeake Bay – July 26, 2022
Report: Pennsylvania has a housing deficit of 98,000 units, rent-burdened population – July 15, 2022
Endangered Species in Pennsylvania, according to the Pennsylvania Game Commission – July 15, 2022
Climate change could make prescribed fires in Pennsylvania more challenging – July 10, 2022
Pa.’s most traveled ‘structurally deficient’ bridge? Report reveals answer, where Keystone State ranks in bridges needing repair – March 28, 2022
Tick and mosquito threat expected to be high in Pa. this spring – March 23, 2022
Fastest growing cities in Pennsylvania – March 8, 2022
This Pa. city is named the top ‘Allergy Capital’ of the U.S. for 2022 – March 3, 2022
Pa. releases final rule to cut methane leaks from existing oil and gas well sites – December 10, 2021
Proposed School to Be Steps Away from Dangerous Pipelines – December 6, 2021
Climate change: an energy imbalance we are already feeling the effects of in Pennsylvania | Climate Smart Part 3 – November 30, 2021
Quarry planned in Bradford County, Pa.: Why are some residents pushing back? – September 29, 2021
Airport Corridor census data shows growth for local communities as business moves in – September 24, 2021
Wet, hot and hazy: How climate change helped shape summer 2021 in the Poconos – September 23, 2021
Exhibition traces a 200-year history of water pollution in Philadelphia – September 11, 2021
Single-use plastics ban cleared for Pa. cities as Pittsburgh moves to eliminate plastic bags – July 1, 2021
Pennsylvania beekeepers lost about 41% of their colonies last winter, report says – July 13, 2021
A thousand little cuts: Locals say a fire on Neville Island shows the pollution didn’t stop after Shenango Coke Works closed – June 23, 2021
Early warning issued for 269 bird species in trouble, many in Pa. – June 22, 2021
Poll shows Pennsylvanians support climate action amid pandemic – June 22, 2021
Increasing rain, aging infrastructure lead growing number of municipalities to adopt stormwater fees – April 2, 2021
Farmland acreage falls in Pa. while population rises in prime agricultural areas – March 29, 2021
Evidence of Fracking Chemicals Found in Bodies of Pennsylvania Children – March 23, 2021
Microplastics found in waterways across PA, including 7 in Allegheny County. Why it’s dangerous and what you should know. – March 10, 2021