Who moves to Thornton, and where they go
Every year the IRS counts how many people move between counties, based on the addresses on their tax returns. Here is what that shows for Adams County, CO, home of Thornton, between the 2022 and 2023 tax years.
- Moved in
- 37,867from other US counties
- Moved out
- 36,608to other US counties
- Net
- +1,259more arrivals than departures
- From abroad
- 106tax filers and dependents only
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Where newcomers come from
| County | People |
|---|---|
| Denver County, CO (Denver) | 8,468 |
| Arapahoe County, CO (Aurora) | 5,540 |
| Jefferson County, CO (Lakewood) | 5,265 |
| Weld County, CO (Greeley) | 1,964 |
| Broomfield County, CO (Broomfield) | 1,671 |
| Boulder County, CO (Boulder) | 1,396 |
| Douglas County, CO (Highlands Ranch) | 735 |
| Larimer County, CO (Fort Collins) | 693 |
| El Paso County, CO (Colorado Springs) | 581 |
| Maricopa County, AZ (Phoenix) | 379 |
| Los Angeles County, CA (Los Angeles) | 268 |
| Harris County, TX (Houston) | 208 |
Where people go when they leave
| County | People |
|---|---|
| Denver County, CO (Denver) | 5,734 |
| Arapahoe County, CO (Aurora) | 4,662 |
| Jefferson County, CO (Lakewood) | 4,360 |
| Weld County, CO (Greeley) | 3,846 |
| Broomfield County, CO (Broomfield) | 1,543 |
| Boulder County, CO (Boulder) | 1,143 |
| Douglas County, CO (Highlands Ranch) | 897 |
| El Paso County, CO (Colorado Springs) | 721 |
| Larimer County, CO (Fort Collins) | 717 |
| Maricopa County, AZ (Phoenix) | 372 |
| Morgan County, CO | 204 |
| Clark County, NV (Las Vegas) | 188 |
Most moves are short hops within the same metro area. 27,425 of the newcomers came from elsewhere in Colorado and 10,442 from other states. Here are the long-distance moves only, more than 100 miles:
Long-distance newcomers come from
| County | People |
|---|---|
| Maricopa County, AZ (Phoenix) | 379 |
| Los Angeles County, CA (Los Angeles) | 268 |
| Harris County, TX (Houston) | 208 |
| San Diego County, CA (San Diego) | 186 |
| El Paso County, TX (El Paso) | 185 |
| Clark County, NV (Las Vegas) | 179 |
| Tarrant County, TX (Fort Worth) | 152 |
| Pueblo County, CO (Pueblo) | 138 |
Long-distance movers go to
| County | People |
|---|---|
| Maricopa County, AZ (Phoenix) | 372 |
| Clark County, NV (Las Vegas) | 188 |
| Pueblo County, CO (Pueblo) | 183 |
| Harris County, TX (Houston) | 176 |
| El Paso County, TX (El Paso) | 170 |
| San Diego County, CA (San Diego) | 160 |
| Los Angeles County, CA (Los Angeles) | 158 |
| Tarrant County, TX (Fort Worth) | 125 |
Frequently asked questions
Where do people moving to Thornton come from?
Most people moving into Adams County, CO come from nearby counties, led by Denver County, CO (8,468 people). The biggest source more than 100 miles away is Maricopa County, AZ.
Where do people leaving Thornton move to?
The top destination is Denver County, CO (5,734 people). Farther away, the most popular is Maricopa County, AZ.
Are more people moving to Thornton or leaving?
Between the 2022 and 2023 tax years, 37,867 people moved into Adams County, CO from elsewhere in the US and 36,608 moved out, a net gain of 1,259 (IRS data, not counting moves from abroad).
Thinking about the move yourself? Compare Thornton with any city it trades people with, like Thornton vs Phoenix, Thornton vs Los Angeles, Thornton vs Houston, Thornton vs San Diego.
Source: IRS Statistics of Income, county-to-county migration data for filing years 2022 to 2023, the latest available. Counts are people (the number of personal exemptions, which the IRS uses to approximate individuals): tax filers plus dependents whose address moved to a different county between the two filing years. People who do not file returns are not counted, and the IRS hides very small flows to protect privacy. Figures are for the whole county, not just the city of Thornton.