Lancaster County Population 2018

Lancaster County's estimated population is 542,903 with a growth rate of 0.70% in the past year according to the most recent United States census data. Lancaster County is the 6th largest county in Pennsylvania.

Year Population Growth Growth Rate
2017542,9033,7660.70%
2016539,1372,6030.49%
2015536,5342,7880.52%
2014533,7463,5970.68%
2013530,1493,2790.62%
2012526,8703,0840.59%
2011523,7863,4790.67%
2010520,30797,48523.06%
1990422,82260,47616.69%
1980362,34642,65313.34%
1970319,69341,33414.85%
1960278,35943,64218.59%
1950234,71722,21310.45%
1940212,50415,6227.93%
1930196,88223,08513.28%
1920173,7976,7684.05%
1910167,0297,7884.89%
1900159,24110,1466.81%
1890149,0959,6486.92%
1880139,44718,10714.92%
1870121,3405,0264.32%
1860116,31417,37017.56%
185098,94414,74117.51%
184084,2037,5729.88%
183076,6318,29512.14%
182068,33614,40926.72%
181053,92710,52424.25%
180043,4037,25620.07%
179036,1470.00%

Lancaster County Population Growth

Population Data via

Lancaster County Race Data

Race Population Percentage
White485,47589.42%
Black or African American25,8194.76%
Asian12,2302.25%
Two or More Races10,1471.87%
American Indian and Alaska Native2,1440.39%
Native Hawaiian and Other Pacific Islander5340.10%

Lancaster County Population Pyramid

0k5k10k15k20k Male Population0k5k10k15k20k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990