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 Cook County
Data followed by an * indicates a Significant Difference at the 90 percent level between that data and the data from the most current year.  Data followed by a "c" indicates the estimate for that year and the current year are both controlled; a statistical test is not appropriate.
TABLE 1. GENERAL DEMOGRAPHIC CHARACTERISTICS
  2003
Estimate
2002
Estimate
2001
Estimate
2000
Estimate
Total population
5,254,294
5,283,888 c
5,256,651 c
5,283,124 c
SEX AND AGE
Male
48.47%
48.40% *
48.32% *
48.38% *
Female
51.53%
51.60% *
51.68% *
51.62% *
Under 5 years
7.54%
7.55%
7.18% *
7.34% *
5 to 9 years
7.11%
7.34%
7.55% *
7.69% *
10 to 14 years
7.55%
7.39%
6.69% *
7.16%
15 to 19 years
6.42%
6.48%
6.49% *
6.65% *
20 to 24 years
6.51%
6.48%
6.87% *
7.07% *
25 to 34 years
15.70%
16.09% *
16.37% *
16.36% *
35 to 44 years
15.28%
15.46% *
15.79% *
15.57% *
45 to 54 years
13.58%
13.29% *
13.29% *
12.59% *
55 to 59 years
4.99%
5.05%
4.83%
4.34% *
60 to 64 years
4.09%
3.70% *
3.74% *
3.86%
65 to 74 years
5.84%
5.85%
5.93% *
6.09% *
75 to 84 years
4.02%
4.02%
4.16%
4.05%
85 years and over
1.36%
1.33%
1.11% *
1.23%
 
Median age (years)
34.5
33.9 *
34.3
33.5 *
 
18 years and over
73.73%
73.64% *
74.58% c
73.63% c
21 years and over
70.26%
70.11%
70.86% *
69.85% *
62 years and over
13.51%
13.28%
13.40%
13.40%
65 years and over
11.22%
11.19% *
11.20% *
11.36% *
Male
40.29%
40.19% *
40.07% *
40.15%
Female
59.71%
59.81%
59.93% *
59.85%
 
RACE
One race
98.72%
97.73% *
98.15% *
98.03% *
White
58.72%
58.70%
57.98%
59.12%
Black or African American
25.91%
25.49% *
25.89%
25.58%
American Indian and Alaska Native
0.26%
0.15% *
0.22%
0.21%
Asian
5.30%
5.16%
4.99% *
5.03% *
Asian Indian
1.52%
1.44%
1.45%
1.51%
Chinese (except Taiwanese)
1.05%
0.87%
0.84%
1.08%
Filipino
0.98%
1.18%
1.16%
1.09%
Japanese
0.34%
0.29%
0.27%
0.21%
Korean
0.56%
0.72%
0.60%
0.49%
Vietnamese
0.31%
0.18%
0.37%
0.19%
Other Asian
0.55%
0.48%
0.30% *
0.44%
Native Hawaiian and Other Pacific Islander
0.05%
0.06%
0.03%
0.05%
Native Hawaiian
N
N
N
N
Guamanian or Chamorro
N
N
N
N
Samoan
N
N
N
N
Other Pacific Islander
N
N
N
N
Some other race
8.48%
8.18%
9.05%
8.04%
Two or more races
1.28%
2.27% *
1.85% *
1.97% *
Two races including Some other race
0.30%
0.66% *
0.96% *
0.66% *
Two races excluding Some other race, and Three or more races
0.98%
1.61% *
0.88%
1.31%
 
Race alone or in combination with one or more other races:
White
59.72%
60.49%
59.44%
60.67%
Black or African American
26.51%
26.64%
26.46%
26.45%
American Indian and Alaska Native
0.62%
0.79%
0.59%
0.78%
Asian
5.68%
5.52% *
5.38% *
5.40% *
Native Hawaiian and Other Pacific Islander
0.05%
0.11%
0.06%
0.08%
Some other race
8.83%
9.00%
10.08% *
8.73%
 
HISPANIC ORIGIN AND RACE
Total population
5,254,294
5,283,888 c
5,256,651 c
5,283,124 c
Hispanic or Latino (of any race)
21.80%
21.62% c
20.71% c
20.16% c
Mexican
16.66%
16.15%
15.89%
14.93% *
Puerto Rican
2.66%
2.54%
2.62%
2.54%
Cuban
0.19%
0.31%
0.33%
0.19%
Other Hispanic or Latino
2.29%
2.62%
1.87%
2.50%
Not Hispanic or Latino
78.20%
78.38% c
79.29% c
79.84% c
White alone
46.07%
46.17% *
47.11% *
47.97% *
Black or African American alone
25.69%
25.30% *
25.67%
25.35% *
American Indian or Alaska Native alone
0.14%
0.10%
0.11%
0.12%
Asian alone
5.27%
5.14%
4.97% *
4.93% *
Native Hawaiian and Other Pacific Islander alone
0.00%
0.02%
0.03%
0.03% *
Some other race alone
0.15%
0.33% *
0.42% *
0.13%
Two or more races:
0.88%
1.32% *
0.97%
1.31% *
Two races including Some other race
0.08%
0.14%
0.22% *
0.15%
Two races excluding Some other race, and Three or more races
0.79%
1.18% *
0.75%
1.15% *
 
RELATIONSHIP
Household population
5,254,294
5,283,888 c
5,256,651 c
5,283,124 c
Householder
38.48%
39.08% *
39.72% *
37.73% *
Spouse
16.88%
16.76%
16.65%
16.50%
Child
31.76%
30.74% *
29.94% *
31.17%
Other relatives
8.21%
8.43%
8.88%
9.42% *
Nonrelatives
4.67%
5.00%
4.80%
5.18%
Unmarried partner
1.95%
1.91%
1.94%
1.72%
 
HOUSEHOLDS BY TYPE
Total households
1,934,893
1,952,609
1,955,396 *
1,947,601
Family households (families)
63.74%
62.85%
62.67%
64.90%
With own children under 18 years
31.23%
30.07%
29.85% *
31.30%
Married-couple families
43.76%
42.91%
41.90% *
43.58%
With own children under 18 years
21.32%
20.46%
19.54% *
20.95%
Female householder, no husband present
15.92%
15.10%
15.14%
16.37%
With own children under 18 years
8.50%
7.97%
8.25%
8.65%
Nonfamily households
36.26%
37.15%
37.33%
35.10%
Householder living alone
30.81%
30.81%
31.60%
29.21% *
65 years and over
9.31%
9.29%
9.46%
9.37%
 
Households with one or more people under 18 years
35.09%
34.56%
34.90%
36.55% *
Households with one or more people 65 years and over
22.69%
22.26%
22.48%
23.28%
 
Average household size
2.72
2.71
2.69
2.71
Average family size
3.47
3.47
3.45
3.41
 
HOUSING OCCUPANCY
Total housing units
2,117,761
2,108,657 c
2,102,483 c
2,096,121 c
Occupied housing units
91.37%
92.60% *
93.00% *
92.91% *
Vacant housing units
8.63%
7.40% *
7.00% *
7.09% *
 
Homeowner vacancy rate (percent)
1.5
1.6
1.4
1.4
Rental vacancy rate (percent)
7.9
7.2
6.5 *
6.0 *
 
HOUSING TENURE
Occupied housing units
1,934,893
1,952,609
1,955,396 *
1,947,601
Owner-occupied
60.78%
58.66% *
58.41% *
58.70% *
Renter-occupied
39.22%
41.34% *
41.59% *
41.30% *
 
Average household size of owner-occupied unit
2.83
2.89
2.86
2.89
Average household size of renter-occupied unit
2.53
2.45
2.44 *
2.45