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American Community Survey (ACS)


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2001 Supplementary Survey Profile
Middlesex County
Supplementary Survey 2001 Logo

TABLE 1. PROFILE OF GENERAL DEMOGRAPHIC CHARACTERISTICS
  Estimate Lower
Bound
Upper
Bound
Total population
736,370
*****
*****
SEX AND AGE
Male
358,886
356,619
361,153
Female
377,484
375,217
379,751
Under 5 years
44,921
44,568
45,274
5 to 9 years
47,475
42,594
52,356
10 to 14 years
44,836
40,054
49,618
15 to 19 years
41,220
38,953
43,487
20 to 24 years
42,051
37,989
46,113
25 to 34 years
122,575
118,339
126,811
35 to 44 years
132,087
127,381
136,793
45 to 54 years
105,944
101,086
110,802
55 to 59 years
33,146
29,371
36,921
60 to 64 years
31,684
28,539
34,829
65 to 74 years
48,669
45,734
51,604
75 to 84 years
31,947
29,045
34,849
85 years and over
9,815
7,693
11,937
 
Median age (years)
37.0
36.7
37.3
 
18 years and over
573,000
572,304
573,696
21 years and over
548,959
545,402
552,516
62 years and over
108,615
105,706
111,524
65 years and over
90,431
88,307
92,555
Male
35,877
34,648
37,106
Female
54,554
53,051
56,057
 
RACE
One race
730,979
728,299
733,659
White
471,084
462,210
479,958
Black or African American
62,929
61,022
64,836
American Indian and Alaska Native
4,371
1,769
6,973
Asian
110,539
108,978
112,100
Asian Indian
61,973
53,870
70,076
Chinese (except Taiwanese)
19,724
14,716
24,732
Filipino
10,080
5,566
14,594
Japanese
181
0
491
Korean
6,110
2,625
9,595
Vietnamese
3,634
0
7,325
Other Asian
8,837
4,097
13,577
Native Hawaiian and Other Pacific Islander
0
0
531
Native Hawaiian
N
N
N
Guamanian or Chamorro
N
N
N
Samoan
N
N
N
Other Pacific Islander
N
N
N
Some other race
82,056
72,932
91,181
Two or more races
5,391
2,711
8,071
Two races including Some other race
3,584
1,066
6,102
Two races excluding Some other race, and Three or more races
1,807
764
2,850
 
Race alone or in combination with one or more other races:
White
474,147
465,135
483,159
Black or African American
63,782
62,025
65,539
American Indian and Alaska Native
5,128
2,612
7,644
Asian
113,064
111,666
114,462
Native Hawaiian and Other Pacific Islander
0
0
531
Some other race
85,911
76,572
95,250
 
HISPANIC ORIGIN AND RACE
Total population
736,370
*****
*****
Hispanic or Latino (of any race)
104,374
*****
*****
Mexican
19,135
8,166
30,104
Puerto Rican
32,553
21,206
43,900
Cuban
4,861
332
9,390
Other Hispanic or Latino
47,825
35,623
60,027
Not Hispanic or Latino
631,996
*****
*****
White alone
447,731
445,131
450,331
Black or African American alone
62,929
61,022
64,836
American Indian or Alaska Native alone
2,272
1,386
3,158
Asian alone
110,539
108,978
112,100
Native Hawaiian and Other Pacific Islander alone
0
0
531
Some other race alone
4,983
1,832
8,135
Two or more races:
3,542
1,529
5,555
Two races including Some other race
1,945
95
3,795
Two races excluding Some other race, and Three or more races
1,597
670
2,524
 
RELATIONSHIP
Household population
736,370
*****
*****
Householder
280,457
272,794
288,120
Spouse
159,096
152,136
166,056
Child
223,927
215,773
232,081
Other relatives
45,164
37,315
53,013
Nonrelatives
27,726
19,707
35,745
Unmarried partner
8,473
5,452
11,494
 
HOUSEHOLDS BY TYPE
Total households
266,660
263,438
269,882
Family households (families)
192,491
186,823
198,159
With own children under 18 years
92,245
85,572
98,918
Married-couple families
148,875
141,100
156,650
With own children under 18 years
70,609
64,704
76,514
Female householder, no husband present
31,111
26,014
36,208
With own children under 18 years
16,907
12,211
21,603
Nonfamily households
74,169
68,196
80,142
Householder living alone
61,067
55,111
67,024
65 years and over
24,349
20,679
28,019
 
Households with one or more people under 18 years
100,306
93,676
106,936
Households with one or more people 65 years and over
65,215
61,753
68,677
 
Average household size
2.76
2.73
2.79
Average family size
3.27
3.20
3.34
 
HOUSING OCCUPANCY
Total housing units
276,441
*****
*****
Occupied housing units
266,660
263,438
269,882
Vacant housing units
9,781
6,559
13,003
 
Homeowner vacancy rate (percent)
0.8
0.0
1.6
Rental vacancy rate (percent)
5.3
2.7
7.9
 
HOUSING TENURE
Occupied housing units
266,660
263,438
269,882
Owner-occupied
178,261
170,928
185,594
Renter-occupied
88,399
80,977
95,821
 
Average household size of owner-occupied unit
2.96
2.89
3.03
Average household size of renter-occupied unit
2.36
2.24
2.48
 

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