The Map American Denominations Drew and Never Redrew

Baptist churches are the largest tradition in eight of America's twelve biggest states. That is the headline, and it is the least interesting thing in the data.

The interesting question is not which tradition is largest somewhere, but which tradition is disproportionately there: where a denomination makes up a far greater share of the local landscape than it does of the country. That measure draws a map of American migration, and it is much sharper than a map of raw counts.

Congregations counted

334,555

Traditions

Roughly 40 in the taxonomy

Sharpest concentration

Utah, LDS 69× national share

Largest single tradition

Baptist 74,721 congregations

Where a tradition is far more common than it is nationally

Each row below compares a tradition's share of one state's congregations against its share of the country's. A multiple of 5 means a tradition is five times as prominent there as it is in America generally.

Every row is a piece of history that never dispersed.

Four things that table is actually showing

A migration that ended where it stopped

Latter-day Saints congregations are 69 times more concentrated in Utah than nationally, and 17 times in Idaho. No other tradition in America comes close to that figure. The 1847 migration terminated in the Salt Lake valley and the settlement pattern has not diffused in the 179 years since.

The oldest establishment in the country, still visible

Congregational churches, the descendants of the New England Puritan establishment, are 12.8 times over-represented in Massachusetts and 11.3 times in Connecticut. Add the United Church of Christ, the denomination most New England Congregational churches joined in 1957, and roughly 17 percent of all Massachusetts congregations descend from that single establishment. A 400-year-old religious settlement is still the largest single feature of the state's landscape.

Scandinavian and German farmland

Lutheran churches make up 31.8 percent of North Dakota and 30.2 percent of Minnesota, six times their national share. This is the clearest church-shaped record of nineteenth-century Scandinavian and German settlement that exists, because the churches were built first and the towns arranged themselves around them.

A twentieth-century movement that stayed home

Foursquare is 4.9 times over-represented in California with 814 congregations. The denomination was founded in Los Angeles in 1923 by Aimee Semple McPherson, and unlike most American revivals it never relocated its centre of gravity. Pennsylvania's Mennonites, 5.1 times over-represented, are the same phenomenon two centuries earlier: an eighteenth-century settlement that stayed put.

Raw size tells a duller story

Ranked by count rather than concentration, the map flattens out. Baptist churches lead eight of the twelve largest states, and only three states in the list are led by anything else.

Georgia is the most concentrated large state in the country: 41 percent of its congregations are Baptist. California is the least: its largest tradition is non-denominational at 15 percent, which is less a tradition than the absence of one, and a fair description of Californian religious life.

How we counted

Counted from the Churches List database on 31 July 2026. Concentration is a tradition's share of one state's congregations divided by its share of all US congregations. Rows are limited to traditions with at least 150 congregations in the state, so a handful of churches cannot produce a large multiple.

Sources

1. Churches List directory, 334,555 congregations, counted 31 July 2026.
2. PBS NewsHour, on the United Methodist disaffiliation window
3. Browse every tradition in the directory, with counts by state.

Figures may be reproduced with attribution and a link. Want the full state-by-tradition matrix? Write to the editors, or compute it from the licensed dataset.