placestats

Children in single-parent households and Republican share of the two-party vote, 2012

A county is not a voter. Read either way, this says one thing and no more. Counties that voted more Republican also tend to differ on the other measure, and counties that voted less Republican tend to differ the other way. It does not follow that the people who voted that way are the people with the different score. Making that leap is called the ecological fallacy: reading a pattern across places as a fact about individual people. It is the most common misuse of exactly this data. How a county votes also goes so closely with its density, age and education that much of what looks political here is really those. That is what the adjusted figures are for. The vote shares run from 2000 to 2024, and the links here are measured in 2023.

Where Children in single-parent households is higher, Republican share of the two-party vote, 2012 tends to be lower. The link is moderate: -0.41 across 2,790 counties, on a scale from −1 (opposite) to +1 (in step). That figure compares places with the same population density, income and education, so those differences can't explain it. It holds inside states too. Measured separately within each of 38 states, the middle value of the link is -0.52.

Holds after adjusting

Every place, plotted

One dot for each place reporting both measures. Hover over or tap a dot to see its name and values. The thin line is the straight line that best fits the dots. The bold line, shown for counties, is the link after adjusting for density, income and education. A dot far from the lines is a place that does not follow the pattern.

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What each measure is

Children in single-parent households

The percentage of children who live in a household headed by one parent.

County Health Rankings · County Health Rankings v082

Republican share of the two-party vote, 2012

The Republican candidate's share of the votes for the two main parties in the 2012 presidential election, Romney against Obama. Third-party votes are left out, just as in the other years.

MIT Election Data and Science Lab · MIT county presidential returns

Highest and lowest

Where each measure is highest and lowest among the places reporting both (2023), with the other measure beside it. This is shown for every size of place where both are published. Metro-area values are added up from their counties. A measure that cannot be added up across counties, such as a middle value (median), has no metro figure. Counts are shown per 1,000 residents, since raw totals would only list the largest places. Cities and towns and ZIP codes are shown where the Census survey or the CDC publishes them; most other sources stop at the county. They are shown for places of 5,000 residents or more, and only where the survey’s margin of error is small enough for the figure to be usable. The CDC publishes its health estimates for cities in a version adjusted for age, so places with older or younger people can be compared fairly, but not for ZIP codes.

Counties

By children in single-parent households

Children in single-parent householdsRepublican share of the two-party vote, 2012
Highest
McCormick County, SC0.779%48.2
Wilcox County, AL0.754%25.6
East Carroll Parish, LA0.746%37.8
Culberson County, TX0.726%34.2
Bullock County, AL0.713%23.6
Lowest
Kenedy County, TX0%50.6
Jeff Davis County, TX0%62
Esmeralda County, NV0%77.5
Blaine County, NE0%90.2
Meagher County, MT0%71.4

By republican share of the two-party vote, 2012

Children in single-parent householdsRepublican share of the two-party vote, 2012
Highest
Madison County, ID0.0557%94.2
Franklin County, ID0.103%94.1
Hansford County, TX0.178%91.8
Ochiltree County, TX0.366%91.5
Uintah County, UT0.13%91.3
Lowest
Bronx County, NY0.516%7.38
District of Columbia, DC0.454%7.41
Prince George's County, MD0.325%9.31
Petersburg city, VA0.585%9.66
Jefferson County, MS0.673%10.6
States — Republican share of the two-party vote, 2012 is not published for states

By children in single-parent households

Children in single-parent householdsRepublican share of the two-party vote, 2012
Highest
District of Columbia0.454%—
Mississippi0.37%—
Louisiana0.345%—
Alabama0.306%—
New Mexico0.305%—
Lowest
Utah0.146%—
Idaho0.17%—
North Dakota0.181%—
Wyoming0.181%—
New Hampshire0.184%—
Metro areas

By children in single-parent households

Children in single-parent householdsRepublican share of the two-party vote, 2012
Highest
Greenwood, MS0.589%40.4
Greenville, MS0.565%28.8
Orangeburg, SC0.565%28.1
Clarksdale, MS0.554%25.8
Natchez, MS-LA0.541%42.1
Lowest
Rexburg, ID0.0695%91.8
Washington, IN0.0878%75.8
Selinsgrove, PA0.0956%68.2
Granbury, TX0.0972%82.7
Decatur, IN0.103%70.1

By republican share of the two-party vote, 2012

Children in single-parent householdsRepublican share of the two-party vote, 2012
Highest
Rexburg, ID0.0695%91.8
Vernal, UT0.13%91.3
Provo-Orem-Lehi, UT0.107%90
Brigham City, UT-ID0.116%89.6
Pampa, TX0.272%88.3
Lowest
Rio Grande City-Roma, TX0.404%13.1
Taos, NM0.489%18.6
Eagle Pass, TX0.359%20.7
Santa Cruz-Watsonville, CA0.213%20.9
Las Vegas, NM0.425%21.1

Counties furthest from the pattern

Compared with the straight line that best fits all 2,799 counties: the five with far more republican share of the two-party vote, 2012 than their children in single-parent households would suggest, and the five with far less.

Children in single-parent householdsRepublican share of the two-party vote, 2012
Above the line
Ochiltree County, TX0.366%91.5
Clay County, KY0.422%84.8
LaSalle Parish, LA0.318%88.2
Glascock County, GA0.327%86.6
Jack County, TX0.27%89.5
Below the line
San Francisco County, CA0.215%13.5
Prince George's County, MD0.325%9.31
Alameda County, CA0.19%18.7
District of Columbia, DC0.454%7.41
Kings County, NY0.296%16.3

Two series, one county

Both measures over time for a county you pick. The two charts are stacked, so they share only the years along the bottom. You can pick from the thirty largest counties reporting both. This panel covers 2010–2024, and a measure published only once shows as a single dot.

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Every version of the link

Each row measures the same link, from −1 to +1, in a different way. If the rows mostly agree, the link does not depend on one choice of method.

Before adjusting for anything-0.3512,790 counties reporting both
After adjusting for density, income and education-0.408the part of the link that is not just how urban, rich and educated a place is
Also adjusting for population size-0.408size taken out as well as density
Also comparing only within each state-0.531each county is compared only with others in its own state, so this is no longer a comparison between states
Giving bigger counties more weight-0.429the adjusted link for the average resident rather than the average county. With this weighting, the data counts for about 283 equally weighted counties
Middle value inside single states-0.523the link worked out inside each of 38 states with at least 20 counties reporting
Using ranks, after adjusting-0.282uses each county’s rank, not its value, so a few extreme counties cannot create the link

How much to believe it

Could it be chance?

The p-value is the chance of seeing a link this strong if there were really none. A value of 0.05 or less means the link is unlikely to be chance. Very small values are written in short form: 3.1e-16 means 0.00000000000000031, and the bigger the number after “e-”, the smaller the value. Treating every county as a separate case gives p = 2.5e-112. But counties in the same state tend to resemble each other, so the better figure allows for that: p = 2.7e-11. The site tested 20,910 pairs, and testing so many turns up some flukes. The q-value allows for that too. For this pair it is 2.2e-111.

Do nearby places look alike?

Moran’s I measures how much nearby places look alike: 0 means no map pattern, and higher means neighbours are more similar. For the part of each county that the adjustment leaves unexplained, it is +0.58 (p = 0.001). That unexplained part still clusters on the map. So some regional factor shared by both measures is not accounted for.

Did they change together?

Not measurable: at least one of these is published for too few of the years a change needs (2014–2019 or 2019–2023), or for too few counties in both.

Related pairs

Association only. Nothing here shows that either measure changes the other. This describes counties, not the people in them. Two measures going together across places does not mean the same people have both. How the US county data works · Explore Children in single-parent households and Republican share of the two-party vote, 2012