Se Denver News

In 2019, 6,033 people moved to Boulder County from within the state, according to migration data from the Internal Revenue Service.

This is an increase over the year before, when 5,583 people migrated to Boulder County from elsewhere in the state.

The number of people moving to Boulder County is offset by the 14,575 residents who left the area during the same year.

There were 13,030 people who left the year before.

Migration data for the U.S. is based on year-to-year address changes reported on individual income tax returns filed with the IRS.

According to the U.S. Census Bureau, most U.S. regions saw their numbers shrink.

The Northeast region of the U.S. suffered the greatest losses, while the Midwest saw population growth.

The U.S. Census Bureau found migration within the country mainly flows to the South, with many people moving to areas of Florida and Texas.

Years	Inflow	Outflow	Domestic Migration
2017-2018	5,523	13,312	-7,789
2018-2019	5,583	13,030	-7,447
2019-2020	6,033	14,575	-8,542