The Growth of Pittsburgh
Annexation and Population

Pittsburgh was chartered as a village in 1759. The following year, the commandant of Fort Pitt counted 149 people living within the village, besides the soldiers that manned the fort. For the next 190 years Pittsburgh saw a steady growth in the population count. In 1907, when Allegheny City was annexed, the count was at 521,000, making Pittsburgh the sixth largest city in the nation.

Although the city ranking within the nation never moved past 6th place, and has declined ever since, the number of residents within city limits continued to grow, peaking at 676,806 in 1950. Since that high point, the population has seen a steady decrease to it's current 2010 level of 305,704, ranked 59th in the country.

The rapid growth of the city during the 1800s was accelerated by a series of annexations of adjacent boroughs and townships. The city that once included only the area of the golden triangle now covered 55.6 square miles.

Below is a list of annexations from 1868 through 1930 that helped Pittsburgh grow from a small village at the forks of the Ohio to the metropolis of today, followed by a list of census totals showing the growth and decline of the Pittsburgh population.

Annexation

June 30, 1868 - Annexed the townships of Pitt, Peebles, Liberty, Collins and Oakland.

April 2, 1872 - Annexed the boroughs of South Pittsburgh, Monongahela, Allentown, St. Clair, Lawrenceville, Temperanceville, Birmingham, Sligo, Mount Washington, West Pittsburgh and Ormsby.

July, 1881 - Annexed the village of Garfield.

December 1, 1894 - Annexed the village of Brushton.

March 1, 1897 - Annexed the borough of Beltzhoover.

December 7, 1907 - Annexed the city of Allegheny.

January 4, 1908 - Annexed the boroughs of Beechview and West Liberty (Brookline).

February 7, 1924 - Annexed parts of Lower St. Clair Township.

June 3, 1927 - Annexed the borough of Carrick.

January 6, 1930 - Annexed the borough of Overbrook.

Population
(city ranking in parenthesis)

1760
1790
1800
1810
1820
1830
1840
1850
1860
1870
1880
1890
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
2010

 

149
376
1,565
4,786 (31)
7,248 (23)
12,568 (17)
21,115 (17)
46,601 (12)
49,221 (17)
86,076 (16)
156,389 (12)
238,617 (13)
321,616 (11)
533,905 (8)
588,343 (9)
669,817 (10)
671,659 (10)
676,806 (12)
604,332 (16)
520,117 (24)
423,938 (30)
369,879 (40)
334,563 (52)
305,704 (59)

Census figures were obtained from the US Census Bureau.
<U.S. Census History>

Wikipedia: United States Cities By Population.

<Historical Facts> <> <Brookline History>