In August, based on the 2010 census, the agency said Maryland had about 17,000 same-sex couples. The revised estimate is roughly 12,500.
The numbers originally reported for states across the U.S. were inflated mainly because of human error.
For a small percentage of opposite-sex couples, census workers going door-to-door may have checked the wrong box for a person's sex, mistaking opposite-sex couples as a same-sex couples. Because there are few same-sex couples, these incorrect checkmarks had a outsized affect on the same-sex statistics.
The Census Bureau on Tuesday also grouped the number of same-sex couples as "spouses" and "unmarried partners." About 2,300 of Maryland's same-sex couples consider themselves spouses.
A new estimate of the number of same-sex couples living in the state during the 2000 census were also released. Using the revised estimates, the figures show a 78 percent increase in the number of same-sex couples living in Maryland over the decade.
steve.kilar@baltsun.com
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