What is the population of Decatur?

The population of Decatur, PA is 3,070.

Where is Decatur located?

Decatur, PA is located at latitude 40.6942400 and longitude -77.4538800. It is in United States.

What is the area of Decatur?

The area of Decatur, PA is 45.2 km².

What is the elevation of Decatur?

Decatur, PA has an elevation of 207 meters (679 feet) above sea level.

What time zone is Decatur in?

Decatur, PA is in the America/New_York time zone.

What state is Decatur in?

Decatur is in the state of Pennsylvania, United States.

What county is Decatur, PA in?

Decatur is in Mifflin County, Pennsylvania.

How has the population of Decatur changed?

The population of Decatur, PA has decreased from 3,137 (2010) to 3,070 (2020), a change of -2.1%.

Decatur, Pennsylvania

Decatur: township in Mifflin County, Pennsylvania

About

Decatur is a township located in the county of Mifflin in the U.S. state of Pennsylvania. Its population at the 2010 census was 3,137 and a population density of 69 people per km². After 10 years in 2020 city had an estimated population of 3,070 inhabitants.

Decatur locator map — Location of Decatur on Pennsylvania map.

Quick Facts about Decatur

Population	3,070 (2020)
Country	United States of America
State	Pennsylvania (United States)
County	Mifflin County
Area	45.2 km²
Latitude & Longitude	40.6942,-77.4539
Time Zone	America/New_York
Local time	02:26:49 (16th April 2026)
Density	68 Pop. per km² as of 2020
Population growth	-2.18% (2010-2020)
Weather	81℉ Partly Sunny 7-days weather

Old schoolhouse Decatur Twp Mifflin Co PA image

Geography

Decatur is located at 40°41'39"N 77°27'14"W (40.6942400, -77.4538800).

Decatur map

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Weather

81°F

Partly Sunny

3 to 8 mph W Thursday

Partly sunny, with a high near 81.

7-Day Forecast

Official website of Decatur

Official Website

Demographics

According to census records, the population of Decatur decreased by 2.18% in 10 years.

Year	Population	% Change	Method
2010	3,137	-	census
2011	3,139	0.06%	estimation process
2012	3,134	-0.16%	estimation process
2013	3,121	-0.42%	estimation process
2014	3,108	-0.42%	estimation process
2015	3,104	-0.13%	estimation process
2016	3,089	-0.49%	estimation process
2017	3,079	-0.32%	estimation process
2018	3,075	-0.13%	estimation process
2019	3,082	0.23%	estimation process
2020	3,070	-0.39%	estimation process

Nearby Schools and Colleges

Schools and campuses linked to Decatur, PA. Select a name to open its map and contact details.

Code	Name	City	ZIP
418481	Mifflin County Academy of Science and Technology	Lewistown (PA)	17044-1697
460385	Geisinger-Lewistown Hospital School of Nursing	Lewistown (PA)	17044
369668	Central Pennsylvania Institute of Science and Technology	Pleasant Gap (PA)	16823
216083	South Hills School of Business & Technology	State College (PA)	16801-4516
214777	Pennsylvania State University-Main Campus	University Park (PA)	16802-1503

Nearby Transit Stations (9)

Rail and bus stations connected to Decatur, PA. Select a station to open its map and address details.

Code	Name	Address	Type
LEW	Lewistown	150 Helen Street	RAIL
HGD	Huntingdon	Fourth and Allegheny Sts.	RAIL
TYR	Tyrone	Pennsylvania Ave and West 10th St.	RAIL
HAR	Harrisburg Transportation Center	4th and Chestnut Streets	RAIL
ALT	Altoona Transportation Center	1231 11th Avenue	RAIL

Nearby Post Offices

Closest post offices linked to Decatur.

Post Office Name	City	ZIP
Milroy Post Office	Milroy (PA)	17063
Burnham Post Office	Burnham (PA)	17009
Mc Clur Post Office	Mc Clure (PA)	17841
Reedsvill Post Office	Reedsville (PA)	17084
Yeagertown Post Office	Yeagertown (PA)	17099

Other places with the same name (12)

Decatur, Illinois The most populous city in Macon County, Illinois. with a population of 70,007 people.
Decatur, Alabama The most populous city in Morgan County, Alabama. with a population of 54,381 people.
Decatur, Indiana city in Indiana, United States with a population of 34,821 people.
Decatur, Georgia county seat of DeKalb County, Georgia, United States with a population of 25,655 people.
Decatur, Texas city in Texas, USA with a population of 7,572 people.
Decatur, Michigan village in Michigan, United States with a population of 1,876 people.
Decatur, Arkansas city in Benton County, Arkansas, United States with a population of 1,790 people.
Decatur, Mississippi town in Newton County, Mississippi, United States with a population of 1,733 people.
Decatur, Tennessee human settlement in Meigs County, Tennessee, United States of America with a population of 1,663 people.
Decatur, Ohio human settlement in Ohio, United States of America with a population of 1,266 people.
Decatur, Nebraska human settlement in Burt County, Nebraska, United States of America with a population of 462 people.
Decatur, New York town in New York, United States with a population of 331 people.

Other cities in Mifflin County

Cities, towns, neighborhoods & other populated places in Mifflin County , PA.

City Name	Population	Title
Lewistown	8,085	City in Montana, United States
Granville	4,971	Township in Mifflin County, Pennsylvania
Burnham	1,984	Borough in Mifflin County, Pennsylvania, United States of America
Menno	1,917	Township in Mifflin County, Pennsylvania
Milroy	1,498	Small city in Redwood County, Minnesota
Juniata Terrace	533	Borough of Pennsylvania
McVeytown	330	Borough of Pennsylvania
Kistler	315	Borough of Pennsylvania
Newton Hamilton	198	Borough of Pennsylvania

Distance to Other Cities

Decatur distances to largest Pennsylvania cities