Mansfield, Pennsylvania

==Demographics==
{{US Census population
|align=left
|1860= 351
|1870= 616
|1880= 1611
|1890= 1762
|1900= 1847
|1910= 1645
|1920= 1609
|1930= 1755
|1940= 1880
|1950= 2657
|1960= 2678
|1970= 4114
|1980= 3322
|1990= 3538
|2000= 3411
|2010= 3625
|2020= 2852
|estyear=2021
|estimate=2840
|estref=<ref name="USCensusEst2020-2021">{{cite web |last1=Bureau |first1=US Census |title=City and Town Population Totals: 2020-2021 |url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-total-cities-and-towns.html |website=Census.gov |publisher=US Census Bureau |access-date=16 July 2022}}</ref>
|footnote=Sources:<ref name="USDecennialCensus">{{cite web|title=Census of Population and Housing|url=https://www.census.gov/programs-surveys/decennial-census.html|publisher=U.S. Census Bureau|access-date=11 December 2013}}</ref><ref name="GR2">{{cite web|url=https://www.census.gov|publisher=[[United States Census Bureau]]|access-date=2008-01-31|title=U.S. Census website}}</ref><ref name=CensusPopEst>{{cite web|title=Incorporated Places and Minor Civil Divisions Datasets: Subcounty Resident Population Estimates: April 1, 2010 to July 1, 2012|url=https://www.census.gov/popest/data/cities/totals/2012/SUB-EST2012.html|work=Population Estimates|publisher=U.S. Census Bureau|access-date=11 December 2013|url-status=dead|archive-url=https://web.archive.org/web/20130611010502/http://www.census.gov/popest/data/cities/totals/2012/SUB-EST2012.html|archive-date=11 June 2013}}</ref><ref name="USCensusDecennial2020CenPopScriptOnly">{{cite web|url=https://api.census.gov/data/2020/dec/pl?get=P1_001N,NAME&for=place:*&in=state:42&key=5ccd0821c15d9f4520e2dcc0f8d92b2ec9336108|title=Census Population API|publisher=United States Census Bureau|accessdate=Oct 12, 2022}}</ref>
}}
As of the census<ref name="GR2" /> of 2000, there were 3,411 people, 957 households, and 467 families living in the borough. The population density was {{convert|1,815.2|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 1,012 housing units at an average density of {{convert|538.5|/sqmi|/km2|sp=us|adj=off}}. The racial makeup of the borough was 93.35% [[White (U.S. Census)|White]], 4.16% [[African American (U.S. Census)|African American]], 0.32% [[Native American (U.S. Census)|Native American]], 0.76% [[Asian (U.S. Census)|Asian]], 0.38% from [[Race (United States Census)|other races]], and 1.03% from two or more races. [[Hispanic (U.S. Census)|Hispanic]] or [[Latino (U.S. Census)|Latino]] of any race were 1.00% of the population.

There were 957 households, out of which 23.3% had children under the age of 18 living with them, 35.6% were married couples living together, 10.1% had a female householder with no husband present, and 51.2% were non-families. 34.8% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.83.

In the borough the population was spread out, with 13.1% under the age of 18, 50.2% from 18 to 24, 15.3% from 25 to 44, 12.4% from 45 to 64, and 9.0% who were 65 years of age or older. The median age was 22 years. For every 100 females, there were 86.8 males. For every 100 females age 18 and over, there were 85.4 males.

The median income for a household in the borough was $27,500, and the median income for a family was $39,420. Males had a median income of $26,858 versus $18,693 for females. The per capita income for the borough was $11,042. About 10.0% of families and 26.7% of the population were below the poverty line, including 18.7% of those under age 18 and 10.7% of those age 65 or over.