MAPIFYSTATS / ANIMATED MAPS / 01
Montana: Human Rivers
Where Americans move, one year at a time. Follow state-to-state tax-return migration, separate incoming and outgoing moves, and compare households, people proxies and reported income.
Source: IRS SOI state migration; U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer. · Source release, rights & limitations
Montana: 21,362 returns reported into the state in 2019–2020. Largest reported connection: California (3,220).
| Place / record | Value | Definition |
|---|---|---|
| California | 3,220 returns | |
| Washington | 2,488 returns | |
| Colorado | 1,599 returns | |
| Oregon | 1,079 returns | |
| Texas | 1,001 returns | |
| Idaho | 978 returns | |
| Arizona | 899 returns | |
| Wyoming | 805 returns | |
| North Dakota | 679 returns | |
| Florida | 614 returns | |
| Utah | 577 returns | |
| Nevada | 562 returns | |
| Minnesota | 531 returns | |
| New York | 384 returns | |
| Illinois | 349 returns | |
| Virginia | 307 returns | |
| North Carolina | 304 returns | |
| South Dakota | 297 returns | |
| Alaska | 295 returns | |
| Michigan | 282 returns | |
| Pennsylvania | 282 returns | |
| Wisconsin | 282 returns | |
| Ohio | 271 returns | |
| Tennessee | 254 returns | |
| Georgia | 249 returns | |
| Missouri | 218 returns | |
| New Mexico | 203 returns | |
| Oklahoma | 178 returns | |
| Iowa | 165 returns | |
| Nebraska | 164 returns | |
| Indiana | 162 returns | |
| Kansas | 158 returns | |
| Massachusetts | 158 returns | |
| South Carolina | 139 returns | |
| Maryland | 125 returns | |
| Hawaii | 124 returns | |
| New Jersey | 112 returns | |
| Louisiana | 104 returns | |
| Kentucky | 101 returns | |
| Alabama | 94 returns | |
| Arkansas | 93 returns | |
| Connecticut | 88 returns | |
| Mississippi | 75 returns | |
| New Hampshire | 70 returns | |
| Maine | 68 returns | |
| Vermont | 64 returns | |
| District of Columbia | 46 returns | |
| West Virginia | 32 returns | |
| Delaware | 17 returns | |
| Rhode Island | 16 returns |
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Source: IRS SOI state migration; U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer. · Source release, rights & limitations
Florida's incoming streams and outgoing streams describe different groups of matched tax returns. Switch direction to see both.
Source: IRS SOI state migration; U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer. · Source release, rights & limitations
Synchronized comparison
Both maps share replay progress and geographic scale. Source periods appear in each title.
What the map shows
Montana: 21,362 returns reported into the state in 2019–2020. Largest reported connection: California (3,220).
Drag to explore; manual map movement releases guided following. Particle movement and travel progress are illustrative. Attribution stays with every exported image.
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Accessible source values
| Place / record | Value | Definition |
|---|---|---|
| California | 3,220 returns | |
| Washington | 2,488 returns | |
| Colorado | 1,599 returns | |
| Oregon | 1,079 returns | |
| Texas | 1,001 returns | |
| Idaho | 978 returns | |
| Arizona | 899 returns | |
| Wyoming | 805 returns | |
| North Dakota | 679 returns | |
| Florida | 614 returns | |
| Utah | 577 returns | |
| Nevada | 562 returns | |
| Minnesota | 531 returns | |
| New York | 384 returns | |
| Illinois | 349 returns | |
| Virginia | 307 returns | |
| North Carolina | 304 returns | |
| South Dakota | 297 returns | |
| Alaska | 295 returns | |
| Michigan | 282 returns | |
| Pennsylvania | 282 returns | |
| Wisconsin | 282 returns | |
| Ohio | 271 returns | |
| Tennessee | 254 returns | |
| Georgia | 249 returns | |
| Missouri | 218 returns | |
| New Mexico | 203 returns | |
| Oklahoma | 178 returns | |
| Iowa | 165 returns | |
| Nebraska | 164 returns | |
| Indiana | 162 returns | |
| Kansas | 158 returns | |
| Massachusetts | 158 returns | |
| South Carolina | 139 returns | |
| Maryland | 125 returns | |
| Hawaii | 124 returns | |
| New Jersey | 112 returns | |
| Louisiana | 104 returns | |
| Kentucky | 101 returns | |
| Alabama | 94 returns | |
| Arkansas | 93 returns | |
| Connecticut | 88 returns | |
| Mississippi | 75 returns | |
| New Hampshire | 70 returns | |
| Maine | 68 returns | |
| Vermont | 64 returns | |
| District of Columbia | 46 returns | |
| West Virginia | 32 returns | |
| Delaware | 17 returns | |
| Rhode Island | 16 returns |
Accessible comparison values
Sources, rights & limitations
Source: IRS SOI state migration; U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer. Basemap: Natural Earth (public domain), U.S. Census Bureau/us-atlas (public domain). Ancient Earth uses the reconstructed source-model land instead.
Data release: 2026-10-04. Retrieved 2026-10-04T00:00:00Z. Commercial use: approved. Export rights: approved.
- https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_state_national.zip
- https://www2.census.gov/programs-surveys/popest/datasets/2020-2024/state/totals/NST-EST2024-ALLDATA.csv
- https://www.irs.gov/pub/irs-soi/stateoutflow1920.csv
- https://www.irs.gov/pub/irs-soi/stateinflow1920.csv
- https://www.irs.gov/pub/irs-soi/stateoutflow2021.csv
- https://www.irs.gov/pub/irs-soi/stateinflow2021.csv
- https://www.irs.gov/pub/irs-soi/stateoutflow2122.csv
- https://www.irs.gov/pub/irs-soi/stateinflow2122.csv
- https://www.irs.gov/pub/irs-soi/stateoutflow2223.csv
- https://www.irs.gov/pub/irs-soi/stateinflow2223.csv
License: https://www.irs.gov/about-irs/use-of-content-from-irsgov
- These are filing-year address changes on matched tax returns, not a complete census of movers. Mailing addresses may differ from residences.
- Returns approximate households; exemptions/individuals approximate people. AGI is year-2 reported adjusted gross income, includes deficits, and is not wealth or money transported.
- Bilateral streams use outflow records once. Inflow and outflow AGI can differ by $1,000 due to source rounding; published direction totals retain their own values.
- Suppressed (-1) and absent bilateral cells remain unknown. The 2022–2023 archive omits six bilateral cells. Published totals are not permission to infer their values.
- 2019–2020 through 2021–2022 use the prior matching series. 2022–2023 is a new series: enhanced matching adds about 5% of returns, and disclosure procedures changed; do not interpret that break as migration growth.
- Per-capita figures divide by the selected state's July 1 population in the destination filing year from Census Vintage 2024, per 10,000 residents. They compare tax-record flows with all residents and are not the percentage of residents who moved.
- Foreign flows, same-state county moves and nonmigrants are separate source categories and are excluded from the state-to-state streams. Curves are illustrative, not travel routes.
Units: returns: matched returns (household proxy) · exemptions: reported individuals (people proxy) · agi: nominal USD, year-2 reported AGI · population: residents, July 1, Census Vintage 2024.
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