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2001 Supplementary Survey Profile
Fairfax County
Supplementary Survey 2001 Logo

TABLE 1. PROFILE OF GENERAL DEMOGRAPHIC CHARACTERISTICS
  Estimate Lower
Bound
Upper
Bound
Total population
974,864
*****
*****
SEX AND AGE
Male
480,715
478,798
482,632
Female
494,149
492,232
496,066
Under 5 years
71,760
71,207
72,313
5 to 9 years
73,312
67,875
78,749
10 to 14 years
69,597
64,028
75,166
15 to 19 years
63,607
61,007
66,207
20 to 24 years
45,742
42,480
49,004
25 to 34 years
144,598
142,367
146,829
35 to 44 years
175,151
174,389
175,913
45 to 54 years
159,379
158,830
159,928
55 to 59 years
51,155
47,113
55,198
60 to 64 years
41,007
37,017
44,997
65 to 74 years
48,809
46,572
51,046
75 to 84 years
23,854
21,636
26,072
85 years and over
6,893
4,948
8,838
 
Median age (years)
36.4
36.2
36.6
 
18 years and over
719,578
719,218
719,938
21 years and over
686,448
682,934
689,963
62 years and over
100,330
96,375
104,285
65 years and over
79,556
77,360
81,752
Male
35,109
33,103
37,115
Female
44,447
42,815
46,079
 
RACE
One race
951,074
944,736
957,412
White
689,556
679,364
699,748
Black or African American
83,476
80,645
86,307
American Indian and Alaska Native
3,004
1,153
4,855
Asian
135,511
129,850
141,172
Asian Indian
30,606
22,445
38,767
Chinese (except Taiwanese)
21,730
14,061
29,399
Filipino
15,714
9,441
21,987
Japanese
6,776
3,499
10,053
Korean
25,184
16,366
34,002
Vietnamese
23,051
14,098
32,004
Other Asian
12,450
5,909
18,991
Native Hawaiian and Other Pacific Islander
1,611
222
3,000
Native Hawaiian
N
N
N
Guamanian or Chamorro
N
N
N
Samoan
N
N
N
Other Pacific Islander
N
N
N
Some other race
37,916
28,856
46,976
Two or more races
23,790
17,452
30,128
Two races including Some other race
4,080
2,107
6,053
Two races excluding Some other race, and Three or more races
19,710
13,313
26,107
 
Race alone or in combination with one or more other races:
White
711,828
700,661
722,995
Black or African American
87,346
83,775
90,917
American Indian and Alaska Native
9,790
7,191
12,389
Asian
147,002
145,494
148,510
Native Hawaiian and Other Pacific Islander
1,908
425
3,391
Some other race
42,311
32,931
51,691
 
HISPANIC ORIGIN AND RACE
Total population
974,864
*****
*****
Hispanic or Latino (of any race)
113,124
*****
*****
Mexican
14,330
8,334
20,326
Puerto Rican
5,063
2,260
7,866
Cuban
2,395
511
4,279
Other Hispanic or Latino
91,336
84,116
98,556
Not Hispanic or Latino
861,740
*****
*****
White alone
619,974
617,897
622,051
Black or African American alone
80,988
78,845
83,131
American Indian or Alaska Native alone
2,261
966
3,556
Asian alone
135,255
129,587
140,923
Native Hawaiian and Other Pacific Islander alone
1,245
0
2,512
Some other race alone
5,085
2,528
7,643
Two or more races:
16,932
11,169
22,695
Two races including Some other race
804
109
1,499
Two races excluding Some other race, and Three or more races
16,128
10,404
21,852
 
RELATIONSHIP
Household population
974,864
*****
*****
Householder
354,564
347,601
361,527
Spouse
213,621
205,315
221,927
Child
299,341
291,769
306,913
Other relatives
50,373
42,626
58,120
Nonrelatives
56,965
49,822
64,108
Unmarried partner
15,543
12,065
19,021
 
HOUSEHOLDS BY TYPE
Total households
361,079
358,279
363,879
Family households (families)
257,897
250,830
264,964
With own children under 18 years
125,948
119,795
132,101
Married-couple families
216,124
208,070
224,178
With own children under 18 years
103,587
98,015
109,159
Female householder, no husband present
29,835
25,532
34,138
With own children under 18 years
16,284
12,867
19,701
Nonfamily households
103,182
96,067
110,297
Householder living alone
76,943
70,353
83,533
65 years and over
16,014
13,537
18,491
 
Households with one or more people under 18 years
132,852
126,409
139,295
Households with one or more people 65 years and over
57,427
54,665
60,189
 
Average household size
2.70
2.68
2.72
Average family size
3.17
3.12
3.22
 
HOUSING OCCUPANCY
Total housing units
366,374
*****
*****
Occupied housing units
361,079
358,279
363,879
Vacant housing units
5,295
2,495
8,095
 
Homeowner vacancy rate (percent)
0.2
0.0
0.5
Rental vacancy rate (percent)
0.6
0.0
1.6
 
HOUSING TENURE
Occupied housing units
361,079
358,279
363,879
Owner-occupied
266,256
259,999
272,513
Renter-occupied
94,823
88,754
100,892
 
Average household size of owner-occupied unit
2.74
2.67
2.81
Average household size of renter-occupied unit
2.59
2.46
2.72
 

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