Total Population in Lancaster County, PA
ACS 2024 5-Year Estimates
557,931
Rank #126/3,222 · #6 in PA
96th
Lancaster 557,931
PA 13M -95.7%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Lancaster County's total population of 557,931 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Lancaster County for total population.
Nearby Rankings
Full ranking →| #123 | Baltimore city, MD | 573,243 |
| #124 | Dane County, WI | 572,674 |
| #125 | South Central Connecticut Planning Region, CT | 570,598 |
| #126 | Lancaster County, PA | 557,931 |
| #127 | Stanislaus County, CA | 553,990 |
| #128 | Spokane County, WA | 549,056 |
| #129 | Greenville County, SC | 548,166 |
About Total Population
Lancaster County, Pennsylvania has a total population of 557,931, ranking #126 of 3,222 counties nationwide — 99.8% below the national value of 330M. Within Pennsylvania, it ranks #6 of 67. This places it in the 96th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.