Population Change 1990-2000
County or Municipality	2000 Population	1990 Population	Population Change	Percent Change
Pennsylvania	12 281 054	11 881 643	399 411	3.4
Lehigh County	312 090	291 130	20 960	7.2
Alburtis borough	2 117	1 415	702	49.6
Allentown city	106 632	105 090	1 542	1.5
Bethlehem city	19 029	18 867	162	0.9
Catasauqua borough	6 588	6 662	-  74	- 1.1
Coopersburg borough	2 582	2 599	-  17	- 0.7
Coplay borough	3 387	3 267	120	3.7
Emmaus borough	11 313	11 157	156	1.4
Fountain Hill borough	4 614	4 637	-  23	- 0.5
Hanover township	1 913	2 243	-  330	- 14.7
Heidelberg township	3 279	3 250	29	0.9
Lower Macungie township	19 220	16 871	2 349	13.9
Lower Milford township	3 617	3 269	348	10.6
Lowhill township	1 869	1 602	267	16.7
Lynn township	3 849	3 220	629	19.5
Macungie borough	3 039	2 597	442	17.0
North Whitehall township	14 731	10 827	3 904	36.1
Salisbury township	13 498	13 401	97	0.7
Slatington borough	4 434	4 678	-  244	- 5.2
South Whitehall township	18 028	18 261	-  233	- 1.3
Upper Macungie township	13 895	8 757	5 138	58.7
Upper Milford township	6 889	6 304	585	9.3
Upper Saucon township	11 939	9 775	2 164	22.1
Washington township	6 588	6 356	232	3.7
Weisenberg township	4 144	3 246	898	27.7
Whitehall township	24 896	22 779	2 117	9.3
Source: U.S. Census Bureau	Prepared by: Pennsylvania State Data Center