Delaware County Population 2018

Delaware County's estimated population is 564,696 with a growth rate of 0.12% in the past year according to the most recent United States census data. Delaware County is the 5th largest county in Pennsylvania.

Year Population Growth Growth Rate
2017564,6967010.12%
2016563,9952900.05%
2015563,7057920.14%
2014562,9131,3040.23%
2013561,6098270.15%
2012560,7821,7030.30%
2011559,0791780.03%
2010558,90111,2502.05%
1990547,651-7,356-1.33%
1980555,007-45,028-7.50%
1970600,03546,8818.48%
1960553,154138,92033.54%
1950414,234103,47833.30%
1940310,75630,49210.88%
1930280,264107,18061.92%
1920173,08455,17846.80%
1910117,90623,14424.42%
190094,76220,07926.89%
189074,68318,58233.12%
188056,10116,69842.38%
187039,4038,80628.78%
186030,5975,91823.98%
185024,6794,88824.70%
184019,7912,46814.25%
183017,3232,51316.97%
182014,810760.52%
181014,7341,92515.03%
180012,8093,32635.07%
17909,4830.00%

Delaware County Population Growth

Population Data via

Delaware County Race Data

Race Population Percentage
White398,08970.50%
Black or African American120,99221.43%
Asian31,3195.55%
Two or More Races11,6052.06%
American Indian and Alaska Native1,0900.19%
Native Hawaiian and Other Pacific Islander2260.04%

Delaware 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