County

Municipality

Population

Numerical Change

Percentage Change

1990

1998

2010

2020

1990-1998

1998-2010

1998-2020

1990-1998

1998-2010

1998-2020

Philadelphia

Philadelphia

1,645,000

1,436,287

1,524,746

1,509,156

-208,713

88,459

72,869

-12.69%

6.16%

5.07%

Montgomery

Bridgeport Borough

4,287

4,149

4,165

4,150

-138

16

1

-3.22%

0.39%

0.02%

Conshohocken Borough

8,064

8,176

8,144

8,088

112

-32

-88

1.39%

-0.39%

-1.08%

Limerick Township

6,691

12,346

17,269

20,594

5,655

4,923

8,248

84.52%

39.88%

66.81%

Lower Merion Township

58,003

56,595

57,448

57,670

-1,408

853

1,075

-2.43%

1.51%

1.90%

Lower Pottsgrove Township

8,808

10,581

11,530

12,056

1,773

949

1,475

20.13%

8.97%

13.94%

Lower Providence Township

19,351

21,024

21,828

22,351

1,673

804

1,327

8.65%

3.82%

6.31%

Narberth Borough

4,278

4,139

4,095

4,050

-139

-44

-89

-3.25%

-1.06%

-2.15%

Norristown Borough

30,754

29,763

29,376

29,050

-991

-387

-713

-3.22%

-1.30%

-2.40%

Plymouth Township

15,958

16,131

15,487

15,207

173

-644

-924

1.08%

-3.99%

-5.73%

Pottstown Borough

21,831

21,465

21,512

21,501

-366

47

36

-1.68%

0.22%

0.17%

Royersford Borough

4,458

4,441

4,368

4,327

-17

-73

-114

-0.38%

-1.64%

-2.57%

Springfield Township

19,599

19,743

19,405

19,297

144

-338

-446

0.73%

-1.71%

-2.26%

Upper Merion Township

25,722

26,825

26,583

26,732

1,103

-242

-93

4.29%

-0.90%

-0.35%

Upper Pottsgrove Township

3,315

3,577

4,224

4,650

262

647

1,073

7.90%

18.09%

30.00%

Upper Providence Township

9,682

12,866

15,610

17,400

3,184

2,744

4,534

32.89%

21.33%

35.24%

West Conshohocken Borough

1,294

1,374

1,903

2,200

80

529

826

6.18%

38.50%

60.12%

West Norriton Township

15,209

15,065

15,153

15,251

-144

88

186

-0.95%

0.58%

1.23%

West Pottsgrove Township

3,829

3,694

3,704

3,701

-135

10

7

-3.53%

0.27%

0.19%

Whitemarsh Township

14,876

14,879

15,586

15,948

3

707

1,069

0.02%

4.75%

7.18%

Montgomery Total

276,009

286,833

297,390

304,223

10,824

10,557

17,390

3.92%

3.68%

6.06%

Chester

East Coventry Township

4,450

4,609

5,554

6,030

159

945

1,421

3.57%

20.50%

30.83%

East Pikeland Township

5,825

7,107

7,760

8,247

1,282

653

1,140

22.01%

9.19%

16.04%

East Vincent Township

4,161

4,784

6,167

6,870

623

1,383

2,086

14.97%

28.91%

43.60%

North Coventry Township

7,506

7,896

8,944

9,422

390

1,048

1,526

5.20%

13.27%

19.33%

Phoenixville Borough

15,066

15,207

16,016

16,304

141

809

1,097

0.94%

5.32%

7.21%

Schuylkill Township

5,538

6,251

6,714

7,002

713

463

751

12.87%

7.41%

12.01%

Spring City Borough

3,433

3,351

3,487

3,510

-82

136

159

-2.39%

4.06%

4.74%

Tredyffrin Township

28,028

29,263

30,439

30,822

1,235

1,176

1,559

4.41%

4.02%

5.33%

Chester Total

74,007

78,468

85,081

88,207

4,461

6,613

9,739

6.03%

8.43%

12.41%

Berks

Amity Township

6,434

7,959

NA

7,428

1,525

NA

-531

23.70%

NA

-6.67%

Bern Township

5,748

5,997

NA

7,958

249

NA

1,961

4.33%

NA

32.70%

Birdsboro Borough

4,222

4,716

NA

5,327

494

NA

611

11.70%

NA

12.96%

Cumru Township

13,142

13,680

NA

16,556

538

NA

2,876

4.09%

NA

21.02%

Douglass Township

3,570

3,665

NA

4,133

95

NA

468

2.66%

NA

12.77%

Exeter Township

17,260

19,386

NA

23,396

2,126

NA

4,010

12.32%

NA

20.69%

Kenhorst Borough

2,918

2,781

NA

2,683

-137

NA

-98

-4.69%

NA

-3.52%

Laureldale Borough

3,726

3,645

NA

3,427

-81

NA

-218

-2.17%

NA

-5.98%

Lower Alsace Township

4,627

4,561

NA

4,255

-66

NA

-306

-1.43%

NA

-6.71%

Mohnton Borough

2,484

2,740

NA

2,714

256

NA

-26

10.31%

NA

-0.95%

Mt. Penn Borough

2,883

2,731

NA

2,652

-152

NA

-79

-5.27%

NA

-2.89%

Muhlenberg Township

12,636

14,308

NA

11,620

1,672

NA

-2,688

13.23%

NA

-18.79%

Reading City

78,380

74,762

NA

72,086

-3,618

NA

-2,676

-4.62%

NA

-3.58%

Robeson Township

5,972

6,483

NA

8,752

511

NA

2,269

8.56%

NA

35.00%

Shillington Borough

5,062

4,841

NA

4,655

-221

NA

-186

-4.37%

NA

-3.84%

Sinking Spring Borough

2,467

2,444

NA

2,268

-23

NA

-176

-0.93%

NA

-7.20%

Spring Township

18,899

21,998

NA

22,042

3,099

NA

44

16.40%

NA

0.20%

St Lawrence Borough

1,542

1,767

NA

1,806

225

NA

39

14.59%

NA

2.21%

Temple Borough

1,491

1,420

NA

1,371

-71

NA

-49

-4.76%

NA

-3.45%

Union Township

3,440

3,512

NA

4,805

72

NA

1,293

2.09%

NA

36.82%

West Lawn Borough

1,606

1,515

NA

1,476

-91

NA

-39

-5.67%

NA

-2.57%

West Reading Borough

4,142

3,970

NA

3,809

-172

NA

-161

-4.15%

NA

-4.06%

Wyomissing Borough

7,332

7,527

NA

7,109

195

NA

-418

2.66%

NA

-5.55%

Wyomissing Hills Borough

2,469

2,410

NA

3,119

-59

NA

709

-2.39%

NA

29.42%

Berks Total

212,452

218,818

225,447

6,366

6,629

3.00%

3.03%

Corridor Total

2,207,468

2,020,406

2,127,033

-187,062

106,627

-8.47%

5.28%