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American Community Survey (ACS)


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2001 Supplementary Survey Profile
Iowa
Supplementary Survey 2001 Logo

TABLE 1. PROFILE OF GENERAL DEMOGRAPHIC CHARACTERISTICS
  Estimate Lower
Bound
Upper
Bound
Total population
2,818,957
*****
*****
SEX AND AGE
Male
1,384,356
1,378,594
1,390,118
Female
1,434,601
1,428,839
1,440,363
Under 5 years
184,287
181,446
187,128
5 to 9 years
201,094
194,354
207,834
10 to 14 years
206,284
199,024
213,544
15 to 19 years
192,154
187,701
196,607
20 to 24 years
188,497
184,195
192,799
25 to 34 years
355,079
348,832
361,326
35 to 44 years
426,176
421,724
430,628
45 to 54 years
405,772
401,964
409,580
55 to 59 years
134,954
130,103
139,805
60 to 64 years
126,187
121,496
130,878
65 to 74 years
204,914
202,135
207,693
75 to 84 years
153,776
149,072
158,480
85 years and over
39,783
35,259
44,307
 
Median age (years)
37.1
36.8
37.4
 
18 years and over
2,099,579
2,095,843
2,103,315
21 years and over
1,996,635
1,990,184
2,003,087
62 years and over
474,506
468,467
480,545
65 years and over
398,473
395,351
401,595
Male
166,852
165,235
168,469
Female
231,621
229,400
233,842
 
RACE
One race
2,784,854
2,779,340
2,790,368
White
2,646,853
2,639,082
2,654,625
Black or African American
58,231
52,900
63,562
American Indian and Alaska Native
6,013
3,691
8,335
Asian
40,259
36,108
44,410
Asian Indian
5,069
2,054
8,084
Chinese (except Taiwanese)
9,168
5,211
13,125
Filipino
3,373
332
6,414
Japanese
2,097
0
4,348
Korean
4,103
2,374
5,832
Vietnamese
7,667
4,025
11,309
Other Asian
8,782
5,195
12,369
Native Hawaiian and Other Pacific Islander
791
0
1,959
Native Hawaiian
N
N
N
Guamanian or Chamorro
N
N
N
Samoan
N
N
N
Other Pacific Islander
N
N
N
Some other race
32,707
25,927
39,487
Two or more races
34,103
28,589
39,617
Two races including Some other race
9,843
6,246
13,440
Two races excluding Some other race, and Three or more races
24,260
19,371
29,149
 
Race alone or in combination with one or more other races:
White
2,679,781
2,671,420
2,688,142
Black or African American
68,077
62,957
73,197
American Indian and Alaska Native
18,647
13,730
23,564
Asian
43,454
39,380
47,528
Native Hawaiian and Other Pacific Islander
963
0
2,192
Some other race
42,779
35,359
50,199
 
HISPANIC ORIGIN AND RACE
Total population
2,818,957
*****
*****
Hispanic or Latino (of any race)
81,958
*****
*****
Mexican
68,991
64,698
73,284
Puerto Rican
2,431
205
4,657
Cuban
481
0
1,384
Other Hispanic or Latino
10,055
7,164
12,946
Not Hispanic or Latino
2,736,999
*****
*****
White alone
2,603,262
2,600,008
2,606,516
Black or African American alone
57,055
51,767
62,343
American Indian or Alaska Native alone
5,654
3,347
7,961
Asian alone
40,259
36,108
44,410
Native Hawaiian and Other Pacific Islander alone
732
0
1,899
Some other race alone
3,539
1,307
5,771
Two or more races:
26,498
21,738
31,258
Two races including Some other race
3,421
2,043
4,799
Two races excluding Some other race, and Three or more races
23,077
18,459
27,695
 
RELATIONSHIP
Household population
2,818,957
*****
*****
Householder
1,173,961
1,162,140
1,185,782
Spouse
643,328
628,127
658,529
Child
815,086
805,170
825,003
Other relatives
68,176
60,314
76,038
Nonrelatives
118,406
108,592
128,220
Unmarried partner
57,194
51,323
63,065
 
HOUSEHOLDS BY TYPE
Total households
1,143,554
1,126,676
1,160,432
Family households (families)
769,997
743,731
796,263
With own children under 18 years
352,471
340,221
364,721
Married-couple families
625,944
600,348
651,540
With own children under 18 years
256,546
246,060
267,032
Female householder, no husband present
102,065
95,701
108,429
With own children under 18 years
71,701
65,844
77,559
Nonfamily households
373,557
359,760
387,354
Householder living alone
311,391
300,890
321,892
65 years and over
130,917
122,160
139,674
 
Households with one or more people under 18 years
373,671
361,578
385,764
Households with one or more people 65 years and over
289,155
282,567
295,743
 
Average household size
2.47
2.42
2.52
Average family size
3.01
2.93
3.09
 
HOUSING OCCUPANCY
Total housing units
1,245,443
*****
*****
Occupied housing units
1,143,554
1,126,676
1,160,432
Vacant housing units
101,889
85,011
118,767
 
Homeowner vacancy rate (percent)
1.6
1.1
2.1
Rental vacancy rate (percent)
7.4
6.2
8.6
 
HOUSING TENURE
Occupied housing units
1,143,554
1,126,676
1,160,432
Owner-occupied
837,068
821,124
853,012
Renter-occupied
306,486
293,562
319,410
 
Average household size of owner-occupied unit
2.58
2.53
2.63
Average household size of renter-occupied unit
2.14
2.09
2.19
 

The 2001 Supplementary Survey universe is limited to the household population and excludes the population living in institutions, college dormitories, and other group quarters. Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate is represented through the use of a confidence interval. The confidence interval computed here is a 90 percent confidence interval and can be interpreted roughly as providing 90 percent certainty that the true number falls between the lower and upper bounds.

The number of householders does not necessarily equal the number of households because of differences in the weighting schemes for the population and occupied housing units.

1. An '*' entry in the lower and upper bound columns indicates that too few sample observations were available to compute a standard error and thus the lower and upper bounds. A statistical test is not appropriate.
2. An '**' entry in the lower and upper bound columns indicates that no sample observations were available to compute a standard error and thus the lower and upper bounds. A statistical test is not appropriate.
3. An '-' entry in the estimate column indicates that no sample observations were available to compute an estimate.
4. An '-' following a median estimate means the median falls in the lowest interval of an open-ended distribution.
5. An '+' following a median estimate means the median falls in the upper interval of an open-ended distribution.
6. An '***' entry in the lower and upper bound columns indicates that the median falls in the lowest interval or upper interval of an open-ended distribution. A statistical test is not appropriate.
7. An '*****' entry in the lower and upper bound columns indicates that the estimate is controlled. A statistical test is not appropriate.
8. An 'N' entry in the estimate, lower bound, and upper bound columns indicates that data for this geographic area cannot be displayed because the number of sample cases is too small.

Source: U.S. Census Bureau  |  American Community Survey Office  |  Page Last Modified: August 23, 2007