The population for the demographic variables (Municipality and Year) as specified in the corresponding row.
Source: Census years (1990, 2000, and 2010) are obtained from the U.S. Census Bureau. Non-census years (e.g., 1991, 1992, 2011, 2012, etc.) and year 2020 population estimates are obtained from the Pennsylvania State Data Center.
2020 Census data by detailed demographic groups was not available at the time of publication, so 2020 estimates from Pennsylvania State Data Center were used.