Population Projections, Pennsylvania Counties: 2000 To 2020 By 5 Year Increments

	1990							Percent Change¹
	Census	Estimate	2000	2005	2010	2015	2020	1990 - 2020
Pennsylvania	11,881,643	11,905,197	12,241,488	12,328,348	12,407,523	12,490,248	12,569,017	5.6

Adams	78,274	78,465	89,143	93,233	97,059	100,585	103,475	31.9
Allegheny	1,336,449	1,336,310	1,265,184	1,224,318	1,187,725	1,157,001	1,130,284	-15.4
Armstrong	73,478	73,517	68,829	66,508	64,518	62,717	61,003	-17.0
Beaver	186,093	186,395	177,941	173,005	168,643	164,649	160,838	-13.7
Bedford	47,919	48,013	50,143	51,223	52,327	53,384	54,402	13.3

Berks	336,523	337,468	368,202	379,806	391,231	402,989	414,621	22.9
Blair	130,542	130,703	128,565	127,550	126,884	126,108	125,049	-4.3
Bradford	60,967	61,061	65,160	67,221	69,431	71,767	74,199	21.5
Bucks	541,174	543,037	606,021	623,036	634,158	641,206	645,042	18.8
Butler	152,013	152,463	163,031	167,073	171,066	174,749	177,837	16.6

Cambria	163,029	163,626	151,785	146,382	141,545	136,866	132,266	-19.2
Cameron	5,913	5,889	5,577	5,459	5,387	5,355	5,333	-9.4
Carbon	56,846	57,144	62,382	63,647	64,306	64,576	64,599	13.0
Centre	123,786	124,987	137,704	143,195	147,065	149,152	151,010	20.8
Chester	376,396	378,035	436,761	458,372	477,297	494,727	510,219	35.0

Clarion	41,699	41,630	41,997	41,928	41,762	41,394	40,781	-2.0
Clearfield	78,097	78,193	75,965	74,663	73,427	72,110	70,760	-9.5
Clinton	37,182	37,118	38,170	38,577	39,104	39,533	39,839	7.3
Columbia	63,202	63,301	62,546	61,880	61,280	60,615	59,798	-5.5
Crawford	86,169	86,669	88,366	89,156	90,315	91,656	93,048	7.4

Cumberland	195,257	195,919	225,774	238,347	249,813	260,144	269,375	37.5
Dauphin	237,813	238,236	254,948	259,933	264,378	268,909	273,483	14.8
Delaware	547,651	549,529	556,623	555,614	554,598	554,193	553,900	0.8
Elk	34,878	34,829	33,070	32,046	31,207	30,607	30,158	-13.4
Erie	275,572	276,373	283,851	286,235	288,541	290,629	292,252	5.7

Fayette	145,351	145,524	142,010	139,837	137,761	135,882	134,499	-7.6
Forest	4,802	4,964	5,051	5,091	5,116	5,111	5,158	3.9
Franklin	121,082	121,523	128,644	130,384	131,561	132,519	133,312	9.7
Fulton	13,837	13,868	15,092	15,574	15,996	16,320	16,565	19.4
Greene	39,550	40,847	41,058	41,307	41,724	42,139	42,484	4.0

Huntingdon	44,164	44,308	46,876	47,682	48,299	48,808	48,989	10.6
Indiana	89,994	89,671	91,628	92,654	93,589	93,911	93,834	4.6
Jefferson	46,083	46,093	43,845	42,848	42,061	41,317	40,533	-12.1
Juniata	20,625	20,703	20,868	20,917	21,006	21,073	21,058	1.7
Lackawanna	219,039	218,932	215,218	213,097	211,356	210,039	209,111	-4.5

Lancaster	422,822	424,932	486,046	513,151	540,823	569,382	597,975	40.7
Lawrence	96,246	96,405	91,028	88,479	86,452	84,784	83,259	-13.6
Lebanon	113,744	114,104	122,361	124,667	126,489	128,109	129,742	13.7
Lehigh	291,130	291,904	311,521	316,448	320,249	323,822	327,295	12.1
Luzerne	328,149	328,319	330,718	327,931	324,516	321,055	317,870	-3.2

Lycoming	118,710	118,982	122,915	123,638	124,102	124,280	124,149	4.3
McKean	47,131	48,702	47,856	47,567	47,411	47,278	47,141	-3.2
Mercer	121,003	121,238	122,293	122,560	123,152	123,872	124,609	2.8
Mifflin	46,197	46,246	46,356	46,046	45,680	45,380	45,209	-2.2
Monroe	95,709	96,811	134,683	153,187	172,172	191,907	212,009	119.0

Montgomery	678,111	678,443	699,475	701,959	704,146	707,680	711,734	4.9
Montour	17,735	17,674	19,081	19,423	19,765	20,167	20,555	16.3
Northampton	247,105	247,603	270,230	278,654	286,983	295,522	303,586	22.6
Northumberland	96,771	98,089	96,511	95,376	94,338	93,495	92,835	-5.4
Perry	41,172	41,345	47,967	50,582	52,785	54,514	55,784	34.9

Philadelphia	1,585,577	1,579,583	1,511,074	1,491,116	1,473,330	1,460,800	1,451,337	-8.1
Pike	27,966	28,637	43,832	51,548	60,059	69,447	79,170	176.5
Potter	16,717	16,741	15,899	15,535	15,276	15,071	14,852	-11.3
Schuylkill	152,585	155,433	152,271	150,185	148,367	146,958	145,994	-6.1
Snyder	36,680	36,861	41,817	44,049	46,208	48,221	50,081	35.9

Somerset	78,218	79,464	76,391	74,693	73,208	71,774	70,323	-11.5
Sullivan	6,104	6,107	6,766	6,974	7,156	7,323	7,457	22.1
Susquehanna	40,380	40,504	44,257	45,117	45,967	46,822	47,565	17.4
Tioga	41,126	40,958	42,256	42,615	43,060	43,440	43,617	6.5
Union	36,176	36,389	41,010	42,731	44,440	45,981	47,465	30.4

Venango	59,381	59,256	55,943	54,389	53,140	51,992	50,852	-14.2
Warren	45,050	44,843	42,486	41,295	40,278	39,333	38,306	-14.6
Washington	204,584	204,147	201,414	199,129	196,872	194,225	191,085	-6.4
Wayne	39,944	40,523	46,392	48,341	49,748	50,703	51,333	26.7
Westmoreland	370,321	370,314	368,354	364,999	361,495	357,681	353,578	-4.5

Wyoming	28,076	28,349	32,210	33,836	35,187	36,286	37,202	31.2
York	339,574	340,948	382,047	394,330	403,133	410,204	415,934	22.0

(1) Percent change was calculated using the 1990 Estimated population

Source: U.S. Department of Commerce, Bureau of the Census, 1990 Census of Population and Housing.
Prepared by the Pennsylvania State Data Center