Population

Historical

1990

%

2000

%

2010

%

2015

%

Under - 19

243,433

32.2%

237,895

30.4%

221,738

27.8%

221,604

27.3%

20 - 34

174,129

23.0%

159,208

20.4%

175,654

22.0%

176,880

21.8%

35 - 54

174,713

23.1%

211,933

27.1%

195,677

24.5%

189,845

23.4%

55 - 74

120,652

16.0%

123,942

15.9%

151,736

19.0%

166,296

20.5%

75 - Older

43,137

5.7%

48,562

6.2%

53,286

6.7%

56,084

6.9%

Total

756,047

100.0%

781,540

100.0%

798,050

100.0%

810,667

100.0%

Median Age

31.6

34.6

35.2

35.6

1990

%

2000

%

2010

%

2015

%

Number

273,676

296,846

313,813

327,349

Median Household Income

$20,864

$30,866

$37,310

$40,245

Average Household Income

$28,018

$42,446

$54,100

$58,427

Under - $34,999

196,852

71.9%

163,980

55.2%

149,064

47.5%

146,258

44.7%

$35,000 - $49,999

38,810

14.2%

46,450

15.6%

44,610

14.2%

45,124

13.8%

$50,000 - $74,999

25,756

9.4%

46,412

15.6%

52,030

16.6%

55,382

16.9%

$75,000 - Above

12,153

4.4%

40,004

13.5%

68,109

21.7%

80,585

24.6%

Average Household Size

2.7

2.5

2.5

2.4

(25+ Years of Age)

1990

%

2000

%

2010

%

2015

%

Under Grade 9

56,677

12.5%

30,117

6.3%

26,670

5.2%

23,140

4.3%

Grade 9 - 12

78,355

17.3%

76,677

16.1%

62,591

12.2%

56,869

10.7%

High School

146,019

32.2%

160,946

33.7%

189,331

36.8%

205,413

38.5%

Some College-No Degree

86,160

19.0%

102,777

21.5%

104,967

20.4%

106,018

19.9%

Associate Degrees

14,308

3.2%

17,051

3.6%

29,239

5.7%

36,230

6.8%

Bachelor Degree

47,554

10.5%

57,959

12.1%

67,240

13.1%

71,639

13.4%

Graduate Degree

25,043

5.5%

31,914

6.7%

34,132

6.6%

34,232

6.4%

Age 25+ Population

454,180

100.0%

477,441

100.0%

514,170

100.0%

533,541

100.0%