Preliminary Population Projections
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| Census |
Preliminary Population Projections |
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1990 |
2000 |
2005 |
2010 |
2015 |
2020 |
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| Pennsylvania |
11882643 |
12241488 |
12328348 |
12407523 |
12490248 |
12569017 |
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| Adams |
78274 |
89143 |
93233 |
97059 |
100585 |
103475 |
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| Allegheny |
1336449 |
1265184 |
1224318 |
1187725 |
1157001 |
1130284 |
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| Armstrong |
73478 |
68829 |
66508 |
64518 |
62717 |
61003 |
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| Beaver |
186093 |
177941 |
173005 |
168643 |
164649 |
160838 |
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| Bedford |
47919 |
50143 |
51223 |
52327 |
53384 |
54402 |
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| Berks |
336523 |
368202 |
379806 |
391231 |
402989 |
414621 |
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| Blair |
130542 |
128565 |
127550 |
126884 |
126108 |
125049 |
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| Bradford |
60967 |
65160 |
67221 |
69431 |
71767 |
74199 |
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| Bucks |
541174 |
606021 |
623036 |
634158 |
641206 |
645042 |
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| Butler |
152013 |
163031 |
167073 |
171066 |
174749 |
177837 |
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| Cambria |
163029 |
151785 |
146382 |
141545 |
136866 |
132266 |
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| Cameron |
5913 |
5577 |
5459 |
5387 |
5355 |
5333 |
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| Carbon |
56846 |
62382 |
63647 |
64306 |
64576 |
64599 |
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| Centre |
123786 |
137704 |
143195 |
147065 |
149152 |
151010 |
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| Chester |
376396 |
436761 |
458372 |
477297 |
494727 |
510219 |
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| Clarion |
41699 |
41997 |
41928 |
41762 |
41394 |
40781 |
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| Clearfield |
78097 |
75965 |
74663 |
73427 |
72110 |
70760 |
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| Clinton |
37182 |
38170 |
38577 |
39104 |
39533 |
39839 |
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| Columbia |
63202 |
62546 |
61880 |
61280 |
60615 |
59798 |
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| Crawford |
86169 |
88366 |
89156 |
90315 |
91656 |
93048 |
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| Cumberland |
195257 |
225774 |
238347 |
249813 |
260144 |
269375 |
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| Dauphin |
237813 |
254948 |
259933 |
264378 |
268909 |
273483 |
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| Delaware |
547651 |
556623 |
555614 |
554598 |
554193 |
553900 |
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| Elk |
34878 |
33070 |
32046 |
31207 |
30607 |
30158 |
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| Erie |
275572 |
283851 |
286235 |
288541 |
290629 |
292252 |
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| Fayette |
145351 |
142010 |
139837 |
137761 |
135882 |
134499 |
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| Forest |
4802 |
5051 |
5091 |
5116 |
5111 |
5158 |
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| Franklin |
121082 |
128644 |
130384 |
131561 |
132519 |
133312 |
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| Fulton |
13837 |
15092 |
15574 |
15996 |
16320 |
16565 |
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| Greene |
39550 |
41058 |
41307 |
41724 |
42139 |
42484 |
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| Huntingdon |
44164 |
46876 |
47682 |
48299 |
48808 |
48989 |
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| Indiana |
89994 |
91628 |
92654 |
93589 |
93911 |
93834 |
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| Jefferson |
46083 |
43845 |
42848 |
42061 |
41317 |
40533 |
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| Juniata |
20625 |
20868 |
20917 |
21006 |
21073 |
21058 |
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| Lackawanna |
219039 |
215218 |
213097 |
211356 |
210039 |
209111 |
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| Lancaster |
422822 |
486046 |
513151 |
540823 |
569382 |
597975 |
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| Lawrence |
96246 |
91028 |
88479 |
86452 |
84784 |
83259 |
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| Lebanon |
113744 |
122361 |
124667 |
126489 |
128109 |
129742 |
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| Lehigh |
291130 |
311521 |
316448 |
320249 |
323822 |
327295 |
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| Luzerne |
328149 |
330718 |
327931 |
324516 |
321055 |
317870 |
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| Lycoming |
118710 |
122915 |
123638 |
124102 |
124280 |
124149 |
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| McKean |
47131 |
47856 |
47567 |
47411 |
47278 |
47141 |
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| Mercer |
121003 |
122293 |
122560 |
123152 |
123872 |
124609 |
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| Mifflin |
46197 |
46356 |
46046 |
45680 |
45380 |
45209 |
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| Monroe |
95709 |
134683 |
153187 |
172172 |
191907 |
212009 |
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| Montgomery |
678111 |
699475 |
701959 |
704146 |
707680 |
711734 |
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| Montour |
17735 |
19081 |
19423 |
19765 |
20167 |
20555 |
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| Northampton |
247105 |
270230 |
278654 |
286983 |
295522 |
303586 |
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| Northumberland |
96771 |
96511 |
95376 |
94338 |
93495 |
92835 |
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| Perry |
41172 |
47967 |
50582 |
52785 |
54514 |
55784 |
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| Philadelphia |
1585577 |
1511074 |
1491116 |
1473330 |
1460800 |
1451337 |
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| Pike |
27966 |
43832 |
51548 |
60059 |
69447 |
79170 |
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| Potter |
16717 |
15899 |
15535 |
15276 |
15071 |
14852 |
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| Schuylkill |
152585 |
152271 |
150185 |
148367 |
146958 |
145994 |
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| Snyder |
36680 |
41817 |
44049 |
46208 |
48221 |
50081 |
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| Somerset |
78218 |
76391 |
74693 |
73208 |
71774 |
70323 |
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| Sullivan |
6104 |
6766 |
6974 |
7156 |
7323 |
7457 |
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| Susquehanna |
40380 |
44257 |
45117 |
45967 |
46822 |
47565 |
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| Tioga |
41126 |
42256 |
42615 |
43060 |
43440 |
43617 |
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| Union |
36176 |
41010 |
42731 |
44440 |
45981 |
47465 |
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| Venango |
59381 |
55943 |
54389 |
53140 |
51992 |
50852 |
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| Warren |
45050 |
42486 |
41295 |
40278 |
39333 |
38306 |
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| Washington |
204584 |
201414 |
199129 |
196872 |
194225 |
191085 |
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| Wayne |
39944 |
46392 |
48341 |
49748 |
50703 |
51333 |
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| Westmoreland |
370321 |
368354 |
364999 |
361495 |
357681 |
353578 |
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| Wyoming |
28076 |
32210 |
33836 |
35187 |
36286 |
37202 |
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| York |
339574 |
382047 |
394330 |
403133 |
410204 |
415934 |
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Source: PA State Data Center
Prepared by: The Pennsylvania State Data Center, Penn State Harrisburg