Median Age

This indicator reports population median age based on the 5-year American Community Survey estimate.
Report Area Total Population Median Age
Franklin County, PA 152,285 40.9
Pennsylvania 12,779,559 40.5
United States 316,515,021 37.6
Data Source: US Census Bureau, American Community Survey. 2011-15. Source geography: Tract

Population Median Age by Gender
Report Area Male Female
Franklin County, PA 39.9 42
Pennsylvania 38.9 42
United States 36.2 38.9
Population Median Age by Race Alone
Report Area White Black or African American Native American / Alaska Native Asian Native Hawaiian / Pacific Islander Some Other Race Multiple Race
Franklin County, PA 42.2 26.7 26.7 34.6 no data 29.7 15.2
Pennsylvania 43.1 32.8 35.8 33.2 27.7 26.7 17.5
United States 40.3 33.2 32 36.3 30.3 28.6 19.6
Population Median Age by Ethnicity
Report Area Hispanic / Latino Not Hispanic / Latino
Franklin County, PA 20.80 43.10
Pennsylvania 25.80 44.00
United States 28.20 42.80
Website Updated December 11 2017 Site Reviewed January 05 2018

Median Age

Data Background

The American Community Survey (ACS) is a nationwide, continuous survey designed to provide communities with reliable and timely demographic, housing, social, and economic data. The ACS samples nearly 3 million addresses each year, resulting in nearly 2 million final interviews. The ACS replaces the long-form decennial census; however, the number of household surveys reported annually for the ACS is significantly less than the number reported in the long-form decennial census. As a result, the ACS combines detailed population and housing data from multiple years to produce reliable estimates for small counties, neighborhoods, and other local areas. Negotiating between timeliness and accuracy, the ACS annually releases current, one-year estimates for geographic areas with large populations; three-year and five-year estimates are also released each year for additional areas based on minimum population thresholds.

Citation: U.S. Census Bureau: A Compass for Understanding and Using American Community Survey Data (2008).

For more information about this source, including data collection methodology and definitions, refer to the American Community Survey website.


Median age data are acquired from the U.S. Census Bureau’s American Community Survey. Data represent estimates for the 5 year period 2010-2015. Mapped data are summarized to 2010 census tract boundaries. The median divides the income distribution into two equal parts: one-half of the cases falling below the median income and one-half above the median. Due to the nature of medians, report areas based on multiple counties or custom areas will return "no data".

For more information on the data reported in the American Community Survey, please see the complete American Community Survey 2015 Subject Definitions.


Race and Ethnicity
Race and ethnicity (Hispanic origin) are collected as two separate categories in the American Community Survey (ACS) based on methods established by the U.S. Office of Management and Budget (OMB) in 1997. Indicator race and ethnicity statistics are generated from self-identified survey responses. Using the OMB standard, the available race categories in the ACS are: White, Black, American Indian/Alaskan Native, Asian, and Other. An ACS survey respondent may identify as one race alone, or may choose multiple races. Respondents selecting multiple categories are racially identified as “Two or More Races”. The minimum ethnicity categories are: Hispanic or Latino, and Not Hispanic or Latino. Respondents may only choose one ethnicity. All social and economic data are reported in the ACS public use files by race alone, ethnicity alone, and for the white non-Hispanic population.

Data Limitations
Beginning in 2006, the population in group quarters (GQ) was included in the ACS. Some types of GQ populations have age and sex distributions that are very different from the household population. The inclusion of the GQ population could therefore have a noticeable impact on demographic distribution. This is particularly true for areas with a substantial GQ population (like areas with military bases, colleges, or jails).

Courtesy: Community Commons, <>, October 2017