Membership in churches and other religious organizations appears to be growing in Hamilton and three adjoining Ohio counties.
But in most Tri-State counties, the percent of residents who affiliate with a religious group has dropped since 2000.
Those findings are from the 2010 Religious Congregations and Membership Study, the most recent and complete census of U.S. church-based institutions and their members.
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Those findings are from the 2010 Religious Congregations and Membership Study , the most recent and complete census of U.S. church-based institutions and their members.
The survey shows nearly 421,000 Hamilton County residents were members of a church or religious organization in 2010 – a little more than half the county’s overall population that year.
Those numbers are slightly higher than in 2000, when membership was about 49 percent of the county population.
Adams, Brown and Clermont counties in Ohio also had higher church and faith-based group member rates in 2010 than in 2000, based on population.
But two of the area’s fast-growing Ohio counties, Butler and Warren, had lower membership rates over the 10-year period – even though the overall number of members and institutions grew.
Membership rates also dipped in four Tri-State Kentucky counties – Boone, Campbell, Gallatin and Kenton – and in Dearborn, Franklin and Ripley counties in Indiana.
Ripley County still had the highest membership rate within the Tri-State, with about 60 percent of residents affiliated with some religious institution.
Catholics had the highest membership totals in seven Tri-State counties: Hamilton and Clermont in Ohio; Campbell and Kenton in Kentucky, and Dearborn, Franklin and Ripley in Indiana.
Evangelical Protestants made up the bulk of church-goers in Adams, Brown, Butler and Warren counties in Ohio, and Boone, Gallatin and Grant counties in Kentucky.
The map below shows the rate of church or religious organization members per 1,000 residents in each county.
Search the database below for details on congregations, members and membership rates by denomination or religious body within each Tri-State county.
Type in any part of a denomination name or county to filter the data, or click on any field header to sort the database.
A “zero” count or rate total for a denomination or group means there were incomplete or unreported data in the survey.
View the interactive