During a CNN Health Care Town Hall on Wednesday, co-host Dana Bash asked Health and Human Services Secretary Tom Price about what would happen to the women who rely on Planned Parenthood for health care if the organization were to be defunded.

Specifically, she asked about those who live in the 105 counties where Planned Parenthood is the only clinic that offers women the full range of contraceptive services.

“Well, I’d be interested in the list you have,” Price replied.

The list, it turns out, comes from data compiled by the National Campaign to Prevent Teen and Unplanned Pregnancy, which did extensive research on so-called contraceptive deserts — areas where women in need have relatively limited access to publicly funded clinics that offer birth control. (Here’s a map of these areas, broken down by county.)

Their research found that 3.1 million US women who need publicly funded contraception live in counties with zero publicly funded clinics that offer the full range of contraceptive methods, including longer-acting methods like IUDs that are the most effective at preventing pregnancy.

The National Campaign shared with Vox the full list of 105 counties where Planned Parenthood is the only full-service reproductive health clinic:

California:

Imperial County

Madera County

Placer County

San Mateo County

Shasta County

Solano County

Sutter County

Colorado:

Chaffee County

Grand County

Montezuma County

Weld County

Connecticut:

Windham County

Illinois:

Champaign County

LaSalle County

McLean County

Peoria County

St. Clair County

Sangamon County

Indiana:

Bartholomew County

Iowa:

Black Hawk County

Des Moines County

Johnson County

Lee County

Pottawattamie County

Story County

Woodbury County

Maine:

Sagadahoc County

York County

Maryland:

Frederick County

Talbot County

Wicomico County

Michigan:

Berrien County

Jackson County

Livingston County

Macomb County

Marquette County

Minnesota:

Beltrami County

Benton County

Dakota County

Douglas County

Kandiyohi County

Olmsted County

Washington County

Missouri:

Greene County

Jasper County

St. Charles County

Montana:

Yellowstone County

New Hampshire:

Sullivan County

New Jersey:

Burlington County

Monmouth County

Passaic County

Union County

New York:

Dutchess County

Fulton County

Genesee County

Jefferson County

Lewis County

Madison County

Montgomery County

Oneida County

Orange County

Richmond County

Rockland County

St. Lawrence County

Schenectady County

Schoharie County

Schuyler County

Sullivan County

Warren County

Ohio:

Clark County

Delaware County

Lucas County

Mahoning County

Medina County

Portage County

Richland County

Wayne County

Pennsylvania:

Cambria County

Somerset County

Utah:

Wasatch County

Washington County

Weber County

Vermont:

Bennington County

Franklin County

Lamoille County

Orleans County

Washington County

Windham County

Windsor County

Virginia:

Albemarle County

Washington:

Chelan County

Clallam County

Kittitas County

Okanogan County

San Juan County

Skagit County

Whitman County

Wisconsin:

Columbia County

Manitowoc County

Outagamie County

Racine County

Sheboygan County

Walworth County

Washington County

Wood County

Other community health centers simply can’t fill in the coverage gaps without Planned Parenthood

Price repeated a common Republican talking point: that since the nation has more than 13,000 community health centers, women don’t need Planned Parenthood’s 650 or so clinics. They can just go somewhere else for birth control.

Price also suggested that other community health centers would somehow “spring up” to fill the gaps in areas where Planned Parenthood was the major provider.

But that’s just not realistic. And if Price thinks otherwise, that means he doesn’t really understand how the nation’s safety-net family planning network works at all.

First, not every community health center is a safety-net family planning provider. In 2010, 8,409 (not 13,000) safety-net health centers offered subsidized family planning, according to research from the Guttmacher Institute, a think tank that studies reproductive health.

More to the point, though, Planned Parenthood offers a hugely disproportionate amount of services for the number of clinics it operates. In 2010, Planned Parenthood clinics made up just 10 percent of safety-net providers, but served 36 percent of women who got contraceptive care from safety-net centers.

In 2010, Planned Parenthood cared for at least half of all women who needed publicly funded family planning services in 332 of the 491 counties where it operates.

And because it specializes in reproductive health care, Planned Parenthood is usually much better at providing birth control than other clinics that focus on primary care:

While many community health centers offer high-quality care, there is just no way that most of them could take on Planned Parenthood’s patients if the organization shut down. They don’t have the capacity; they often struggle just to accommodate the patients they already have.

More government grant money alone would not solve that problem; health centers would need capital to build more clinics and hire more staff, and they would need time to build capacity.

And that’s if Republicans actually keep their promises to divert Planned Parenthood’s funding elsewhere. That often doesn’t happen. And when it does, it often doesn’t work.

After Republican lawmakers in Kansas kicked Planned Parenthood out of the state’s Title X program by restricting the grants to public entities in 2011, the number of patients seen in Title X–funded health centers in Kansas dropped dramatically, from 38,461 patients in 2011 to just 24,047 in 2015.

When Republican lawmakers in Texas kicked Planned Parenthood out of the state’s Women’s Health Program in 2013, other providers didn’t step up to fill in the gaps. Women just got less health care. In areas that had been served by Planned Parenthood before defunding, prescriptions for the most effective forms of birth control plummeted by a third, and women on Medicaid had 27 percent more births than normal.

In practice, defunding Planned Parenthood takes money away from its mostly low-income patients, who will no longer be able to use their Medicaid coverage at their preferred health care provider. Low-income women will be hit especially hard, but all Planned Parenthood patients may be affected if clinics are forced to close as a result of budget cuts.

Correction: Chelan County, Washington was mistakenly omitted when this article was first published.