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1999 - 2001 American Community Survey
Sample Size for Counties and County Equivalents Published
The number in sample is the 12 month sample for the American Community
Survey. The number in sample includes interviewed housing units,
deletes (addresses which had been misclassified as housing units or
demolished units), noninterviewed housing units and housing units
that were subsampled out. The number of interviews is the actual
sample that is used to produce all weighted estimates for the survey
year. The number of interviews includes both occupied and vacant
housing units. For example, a sampled case that refuses to answer
the survey (a noninterview) would be in the sample but would not
be an interview. Similarly a sampled case that turns out to be a
business address would be a sampled case (a delete), but would not be
an interview.
The American Community Survey uses three modes of data collection - mail,
telephone and personal visit. The sample has a three month data collection
period; the first month is by mail and the second month by telephone.
Those who have not responded by mail or telephone two months after
the initial mailout are identified and sampled at a rate of 1-in-3.
The households selected in the 1-in-3 sample are then enumerated by
personal visit during the third month of the data collection period.
The other two out of three cases that were not selected for personal
visit are the subsampled out cases. Also, because of the three month
interview period, some cases (telephone cases from the December panel
and personal visit cases from the November and December panels)
included in the sample selected in one year are tabulated in the next year's
sample estimates.
State |
County |
1999 |
2000 |
2001 |
Number in Sample |
Number of Interviews |
Number in Sample |
Number of Interviews |
Number in Sample |
Number of Interviews |
Arizona |
Pima County |
17,178 |
10,313 |
15,766 |
10,637 |
16,173 |
10,447 |
Arkansas |
Jefferson County |
2,447 |
1,220 |
1,960 |
1,226 |
2,130 |
1,241 |
California |
San Francisco County |
12,866 |
7,024 |
10,801 |
7,165 |
9,492 |
5,935 |
Tulare County |
6,941 |
3,763 |
6,360 |
3,954 |
6,149 |
3,641 |
Florida |
Broward County |
27,429 |
15,583 |
24,174 |
15,831 |
18,965 |
12,276 |
Georgia |
Upson County |
644 |
354 |
543 |
349 |
515 |
364 |
Illinois |
Lake County |
8,890 |
5,378 |
7,274 |
5,358 |
7,185 |
4,608 |
Indiana |
Miami County |
1,050 |
689 |
889 |
627 |
932 |
612 |
Iowa |
Black Hawk County |
3,489 |
2,305 |
2,823 |
2,263 |
3,100 |
2,265 |
Louisiana |
De Soto Parish |
716 |
416 |
733 |
459 |
770 |
499 |
Maryland |
Calvert County |
1,418 |
931 |
1,187 |
888 |
1,122 |
833 |
Massachusetts |
Hampden County |
10,110 |
5,932 |
8,297 |
5,797 |
8,692 |
5,875 |
Mississippi |
Madison County |
1,456 |
896 |
1,331 |
859 |
1,416 |
915 |
Missouri |
Iron County |
688 |
411 |
600 |
412 |
585 |
355 |
Reynolds County |
479 |
278 |
419 |
278 |
423 |
261 |
Washington County |
843 |
448 |
698 |
467 |
726 |
436 |
Montana |
Flathead County |
2,422 |
1,533 |
1,955 |
1,348 |
1,970 |
1,363 |
Lake County |
1,065 |
614 |
882 |
598 |
1,025 |
661 |
Nebraska |
Douglas County |
10,920 |
6,771 |
9,020 |
6,684 |
9,358 |
6,668 |
New Mexico |
Otero County |
1,472 |
769 |
1,179 |
703 |
1,441 |
816 |
New York |
Bronx County |
18,569 |
8,038 |
16,134 |
8,389 |
15,198 |
7,153 |
Rockland County |
5,995 |
3,271 |
4,561 |
3,109 |
4,550 |
3,054 |
Ohio |
Franklin County |
16,907 |
9,737 |
13,381 |
9,586 |
13,941 |
9,641 |
Oregon |
Multnomah County |
16,073 |
9,628 |
13,372 |
9,752 |
13,932 |
9,826 |
Pennsylvania |
Fulton County |
424 |
265 |
358 |
245 |
329 |
239 |
Schuylkill County |
4,434 |
2,878 |
3,904 |
2,928 |
3,931 |
2,758 |
Tennessee |
Sevier County |
1,506 |
891 |
1,508 |
976 |
1,503 |
945 |
Texas |
Fort Bend County |
1,637 |
791 |
1,193 |
820 |
1,333 |
715 |
Harris County |
17,912 |
8,696 |
13,638 |
8,473 |
13,068 |
7,031 |
Starr County |
967 |
456 |
824 |
425 |
813 |
436 |
Zapata County |
299 |
133 |
254 |
111 |
267 |
118 |
Virginia |
Petersburg city |
1,051 |
509 |
810 |
503 |
802 |
513 |
Washington |
Yakima County |
4,043 |
2,400 |
3,590 |
2,365 |
3,749 |
2,465 |
West Virginia |
Ohio County |
1,587 |
951 |
1,255 |
914 |
1,321 |
887 |
Wisconsin |
Oneida County |
1,261 |
738 |
1,328 |
823 |
1,348 |
838 |
Vilas County |
1,325 |
696 |
1,143 |
688 |
1,108 |
618 |
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