According to Census population estimates, these are the 5 counties whose populations grew by the largest percentages from 2020 to 2021. Counties with under 20,000 total residents were excluded from the ranking since just a few people can skew the numbers in such counties.

#5 Liberty County, Texas

The population of this Texas county grew 6.54% to nearly 98,000 people.  Perhaps due to this growth rate, the largest industry in the county by number of jobs is construction.  The highest paying industry however is utilities.

#4 St. Johns County, Florida

This northeast Florida coastal county grew 6.96% last year, ending at just under 293,000 residents.  The most common job is sales, but the highest paying jobs are in architecture and engineering.

#3 Rockwall County, Texas

This Texas county grew 7.94% last year, and most working residents have high-earning management jobs.  The 405.06 census tract is especially wealthy with a median household income of well over $150,000.

#2 Comal County, Texas

Comal grew 8.35% up to 175,000 people.  Most residents work in sales or management jobs, but the highest earners by far work in tech.

#1 Kaufman County, Texas

Pandemic boom Kaufman County grew 8.57% last year, ending up with nearly 158,000 residents.  Most people work in general office & administrative jobs which are not necessarily the most robust if we enter a steeper recession, but the highest earners in the county by far are lawyers.