Allegheny County Population 2018

Allegheny County's estimated population is 1,223,048 with a growth rate of -0.37% in the past year according to the most recent United States census data. Allegheny County is the 2nd largest county in Pennsylvania.

Year Population Growth Growth Rate
20171,223,048-4,505-0.37%
20161,227,553-2,499-0.20%
20151,230,052-3,428-0.28%
20141,233,480-412-0.03%
20131,233,8923,0220.25%
20121,230,8703,1030.25%
20111,227,7673,8700.32%
20101,223,897-112,552-8.42%
19901,336,449-113,636-7.84%
19801,450,085-154,931-9.65%
19701,605,016-23,571-1.45%
19601,628,587113,3507.48%
19501,515,237103,6987.35%
19401,411,53937,1292.70%
19301,374,410188,60215.90%
19201,185,808167,34516.43%
19101,018,463243,40531.40%
1900775,058223,09940.42%
1890551,959196,09055.10%
1880355,86993,66535.72%
1870262,20483,37346.62%
1860178,83140,54129.32%
1850138,29057,05570.23%
184081,23530,68360.70%
183050,55215,63144.76%
182034,9219,60437.93%
181025,31710,23067.81%
180015,0874,77846.35%
179010,3090.00%

Allegheny County Population Growth

Population Data via

Allegheny County Race Data

Race Population Percentage
White992,27381.13%
Black or African American164,61813.46%
Asian44,4833.64%
Two or More Races25,5522.09%
American Indian and Alaska Native1,9730.16%
Native Hawaiian and Other Pacific Islander3990.03%

Allegheny County Population Pyramid

0k10k20k30k40k50k Male Population0k10k20k30k40k50k 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