Here are the fastest growing and shrinking counties in America

Business Insider/Andy Kiersz, data from US Census Bureau

• The Census Bureau recently released estimates on how the populations of each of the 3,142 counties in the US changed between 2017 and 2018.
• Suburban counties around big southern metropolitan areas grew quickly, while northeastern and Midwestern counties had more modest growth or population declines.
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The Census Bureau recently released its annual estimates for how the populations of each of the 3,142 counties and county-equivalents in the US changed in the year between July 1, 2017 and July 1, 2018.

The above map shows the percent change in population over that year in each county, with counties in blue having growing populations and counties in red seeing declines over the year.

Some of the big winners are large metropolitan areas in the south and west. The rings of counties around Texas' big cities of Houston, Dallas, and San Antonio show up in dark blue, and most of Florida's counties saw strong growth over the year.

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Several counties in the northeast and Midwest saw more moderate growth or population decline over the year. Notably, the boroughs of New York City other than Staten Island all saw modest declines in population. Other places with big population declines included several counties along the southern banks of the Mississippi river.

Here are the ten counties with populations over 10,000 that saw the biggest percent growth over the year:

Business Insider/Andy Kiersz, data from US Census Bureau

And here are the ten counties with at least 10,000 residents that had the largest declines over the year:

Business Insider/Andy Kiersz, data from US Census Bureau

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