AFF Table

Subject	Percent of total	MOE	Percent of families with own children under 18 years	MOE	Percent of families with related children under 18 years	MOE
Families	3,216,764	+/-41114	1,413,441	+/-30731	(X)	(X)
EMPLOYMENT STATUS CHARACTERISTICS
Married-couple families	2,448,014	+/-41010	999,645	+/-30201	(X)	(X)
Both husband and wife in labor force	49.6	+/-0.7	62.3	+/-1.1	(X)	(X)
Husband in labor force, wife not in labor force	21.2	+/-0.6	27.9	+/-1.0	(X)	(X)
Wife in labor force, husband not in labor force	7.2	+/-0.4	3.9	+/-0.7	(X)	(X)

Other families	768,750	+/-25801	413,796	+/-18940	(X)	(X)
Female householder, no husband present, in labor force	47.7	+/-1.9	57.4	+/-2.2	(X)	(X)
Male householder, no wife present, in labor force	19.2	+/-1.6	20.2	+/-2.0	(X)	(X)

WORK STATUS CHARACTERISTICS
Families	3,216,764	+/-41114	1,413,441	+/-30731	(X)	(X)
No workers in the past 12 months	15.3	+/-0.5	4.6	+/-0.6	(X)	(X)
1 worker in the past 12 months	30.3	+/-0.7	37.0	+/-1.3	(X)	(X)
2 or more workers in the past 12 months	54.4	+/-0.7	58.4	+/-1.3	(X)	(X)

Married-couple families	2,448,014	+/-41010	(X)	(X)	1,051,241	+/-29566
Householder worked full-time, year-round in the past 12 months	51.0	+/-0.9	(X)	(X)	64.3	+/-1.3
Spouse worked full-time, year-round in the past 12 months	24.4	+/-0.7	(X)	(X)	27.1	+/-1.0
Householder worked part-time or part-year in the past 12 months	23.3	+/-0.7	(X)	(X)	25.4	+/-1.2
Spouse worked part-time or part-year in the past 12 months	7.7	+/-0.5	(X)	(X)	8.2	+/-0.8
Householder did not work in the past 12 months	25.7	+/-0.7	(X)	(X)	10.2	+/-1.0
Spouse did not work in the past 12 months	16.7	+/-0.5	(X)	(X)	2.0	+/-0.4

Source: U.S. Census Bureau, 2004 American Community Survey

Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of error. The margin of error can be interpreted roughly as providing a 90 percent probability that the interval defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds) contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a discussion of nonsampling variability, see Accuracy of the Data). The effect of nonsampling error is not represented in these tables.

Notes:

· Employment and unemployment estimates may vary from the official labor force data released by the Bureau of Labor Statistics because of differences in survey design and data collection. For guidance on differences in employment and unemployment estimates from different sources go to http://www.census.gov/hhes/www/laborfor/laborguidance082504.html.

Explanation of Symbols:

1. An '*' entry in the margin of error column indicates that too few sample observations were available to compute a standard error and thus the margin of error. A statistical test is not appropriate.

2. An '**' entry in the margin of error column indicates that no sample observations were available to compute a standard error and thus the margin of error. A statistical test is not appropriate.

3. An '-' entry in the estimate column indicates that no sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest interval or upper interval of an open-ended distribution.

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 margin of error column 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 margin of error column indicates that the estimate is controlled. A statistical test for sampling variability is not appropriate.

8. An 'N' entry in the estimate and margin of error columns indicates that data for this geographic area cannot be displayed because the number of sample cases is too small.

9. An '(X)' means that the estimate is not applicable or not available.

Prepared By: The Pennsylvania State Data Center 02/1/2006