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 Ada County
Note: The 2003 American Community Survey universe is limited to the household population and excludes the population living in institutions, college dormitories, and other group quarters.
TABLE 1. GENERAL DEMOGRAPHIC CHARACTERISTICS
  Estimate Lower
Bound
Upper
Bound
Total population
316,635
*****
*****
SEX AND AGE
Male
155,589
153,381
157,797
Female
161,046
158,838
163,254
Under 5 years
25,599
24,090
27,108
5 to 9 years
22,527
19,409
25,645
10 to 14 years
23,860
20,835
26,885
15 to 19 years
21,064
19,899
22,229
20 to 24 years
23,059
20,971
25,147
25 to 34 years
51,285
49,102
53,468
35 to 44 years
49,693
48,078
51,308
45 to 54 years
43,869
43,123
44,615
55 to 59 years
15,908
13,891
17,925
60 to 64 years
11,639
9,620
13,658
65 to 74 years
14,845
14,332
15,358
75 to 84 years
8,321
6,758
9,884
85 years and over
4,966
3,403
6,529
 
Median age (years)
33.5
32.9
34.1
 
18 years and over
231,156
230,797
231,515
21 years and over
218,756
216,932
220,580
62 years and over
34,929
33,117
36,741
65 years and over
28,132
27,619
28,645
Male
11,835
11,509
12,161
Female
16,297
15,894
16,700
 
RACE
One race
314,311
312,959
315,663
White
290,307
287,659
292,955
Black or African American
2,913
99
5,727
American Indian and Alaska Native
3,910
1,919
5,901
Asian
8,722
5,837
11,607
Asian Indian
3,427
362
6,492
Chinese (except Taiwanese)
948
0
2,216
Filipino
141
0
363
Japanese
130
0
345
Korean
3,360
529
6,191
Vietnamese
618
0
1,303
Other Asian
98
0
263
Native Hawaiian and Other Pacific Islander
0
0
385
Native Hawaiian
N
N
N
Guamanian or Chamorro
N
N
N
Samoan
N
N
N
Other Pacific Islander
N
N
N
Some other race
8,459
5,251
11,667
Two or more races
2,324
972
3,676
Two races including Some other race
419
0
1,166
Two races excluding Some other race, and Three or more races
1,905
627
3,183
 
Race alone or in combination with one or more other races:
White
292,505
289,501
295,509
Black or African American
3,323
478
6,168
American Indian and Alaska Native
4,559
2,765
6,353
Asian
9,694
6,959
12,429
Native Hawaiian and Other Pacific Islander
0
0
385
Some other race
8,878
5,773
11,983
 
HISPANIC ORIGIN AND RACE
Total population
316,635
*****
*****
Hispanic or Latino (of any race)
15,573
*****
*****
Mexican
11,977
9,144
14,810
Puerto Rican
0
0
385
Cuban
0
0
385
Other Hispanic or Latino
3,596
763
6,429
Not Hispanic or Latino
301,062
*****
*****
White alone
285,091
284,706
285,476
Black or African American alone
2,516
0
5,206
American Indian or Alaska Native alone
2,727
2,146
3,308
Asian alone
8,722
5,837
11,607
Native Hawaiian and Other Pacific Islander alone
0
0
385
Some other race alone
101
0
283
Two or more races:
1,905
627
3,183
Two races including Some other race
0
0
385
Two races excluding Some other race, and Three or more races
1,905
627
3,183
 
RELATIONSHIP
Household population
316,635
*****
*****
Householder
122,400
118,515
126,285
Spouse
68,813
64,898
72,728
Child
94,935
91,512
98,358
Other relatives
10,792
7,179
14,405
Nonrelatives
19,695
15,996
23,394
Unmarried partner
6,869
4,821
8,917
 
HOUSEHOLDS BY TYPE
Total households
125,127
122,741
127,513
Family households (families)
83,330
78,892
87,768
With own children under 18 years
43,624
39,732
47,516
Married-couple families
70,541
65,814
75,268
With own children under 18 years
35,657
31,895
39,419
Female householder, no husband present
9,947
7,548
12,346
With own children under 18 years
6,990
4,944
9,036
Nonfamily households
41,797
37,636
45,958
Householder living alone
27,429
23,725
31,133
65 years and over
7,645
5,852
9,438
 
Households with one or more people under 18 years
45,113
41,123
49,103
Households with one or more people 65 years and over
20,435
19,033
21,837
 
Average household size
2.53
2.48
2.58
Average family size
3.07
2.96
3.18
 
HOUSING OCCUPANCY
Total housing units
131,303
*****
*****
Occupied housing units
125,127
122,741
127,513
Vacant housing units
6,176
3,790
8,562
 
Homeowner vacancy rate (percent)
1.2
0.0
2.5
Rental vacancy rate (percent)
8.5
3.3
13.7
 
HOUSING TENURE
Occupied housing units
125,127
122,741
127,513
Owner-occupied
93,609
89,362
97,856
Renter-occupied
31,518
27,313
35,723
 
Average household size of owner-occupied unit
2.61
2.52
2.70
Average household size of renter-occupied unit
2.31
2.10
2.52
 
Profile Navigation
  
Viewing 2003 Profile for
Ada County
  Demographic - Table 1
  Social - Table 2
  Economic - Table 3
  Housing - Table 4
  Narrative

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See footnotes below.

Footnotes
The 2003 American Community 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.

For more information on understanding race and Hispanic origin data, please see the Census 2000 Brief entitled, Overview of Race and Hispanic Origin, issued March 2001. (pdf format)

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.

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Source: U.S. Census Bureau  |  American Community Survey Office  |  Page Last Modified: August 24, 2007