Citable statement
In ACS 2024, 6,291 people living in Washington reported living in Montana one year earlier (± 2,249, 90% margin of error).
- Source ·
- U.S. Census Bureau, State-to-State Migration Flows: 2024 American Community Survey 1-Year Estimates (Table T13). Official release Jan 21, 2026. Margins of error are 90% MOE.
- Status ·
- Latest available as of Sep 7, 2026. No 2025 state-to-state table is published.
- Limitation ·
- A previous-residence count of people, not household-goods shipments, trucks, or permanent relocations. The distance on this page is state-centroid straight-line, not driving miles. No price, fuel, or toll figure exists in this dataset.
- Cite as ·
- IMMERVEIL, “Montana to Washington migration, ACS 2024”, https://immerveil.fyi/routes/montana-to-washington — derived from U.S. Census Bureau ACS 2024 1-year Table T13.
What the figure measures
Tabulation of current state of residence crossed by state of residence 1 year ago. This is a 1-year mobility / previous-residence statistic, not a count of household-goods shipments.
Universe: population 1 year and over. Dataset: State-to-State Migration Flows: 2024 American Community Survey 1-Year Estimates (Table T13). Official release: Jan 21, 2026. Last checked: Sep 7, 2026. Status: LATEST AVAILABLE. Margins of error in these tables are Census Bureau 90% margins of error.
Corridor table
| Series | Estimate | 90% MOE |
|---|---|---|
| Montana → Washington | 6,291 | ± 2,249 |
| Washington → Montana | 3,631 | ± 1,556 |
| Montana out-of-state movers | 35,447 | ± 4,254 |
| Washington in-from-other-state movers | 222,059 | ± 12,169 |
| U.S. different-state movers | 7,157,607 | ± 75,154 |
Corridor in context · derived from the table
What makes this pair different
- Rank among Montana outbound
- 1st of 45
- Rank among Washington inbound
- 9th of 48
- Rank among all state pairs
- 305th of 2,096
- Relative margin of error
- 35.7%
- Net direction at 90%
- Not established
- Geography
- No shared border
17.7% of outbound
2.8% of inbound
Eligible pairs in ACS 2024 T13
90% interval 4,042–8,540
Difference ± 2,735
Regional (250–750 centroid miles)
Washington is the 1st largest of 45 outbound destinations recorded for Montana — 17.7% of the 35,447 people who left Montana for another state.
Montana is the 9th largest of 48 inbound origins recorded for Washington — 2.8% of the 222,059 people who arrived in Washington from another state.
Nationally, this is the 305th largest of 2,096 state-to-state flows that carry an estimate, a margin of error, and a reverse estimate in the 2024 table.
The 90% margin of error is 35.7% of the estimate: the Census interval runs from 4,042 to 8,540. Treat any single-year comparison inside that band as noise.
Montana → Washington exceeds Washington → Montana by 2,660 (1.73× the other direction), but that difference sits inside its own 90% margin of error (± 2,735). At 90% confidence the table does not establish a net direction for this pair.
Montana and Washington do not share a land border. 508 state-centroid straight-line miles; IMMERVEIL planning band: Regional (250–750 centroid miles). Not driving miles.
Derivations: ranks are competition ranks among cells that carry an estimate (ties share a rank); shares divide the pair estimate by the state’s ACS total; the difference test uses √(MOE₁² + MOE₂²) per Census Bureau statistical-testing guidance; the distance band is an IMMERVEIL planning label on centroid miles, not a tariff zone. Corridor context module v1.0.
Distance note
508 miles is the state-centroid straight-line distance between TIGER-derived geographic centroids of Montana and Washington. It is not driving mileage, not a highway recommendation, and not a shipping zone. Driving or route miles require a city-to-city pair and a licensed routing provider — this page does not invent that figure. State centroids are computed with d3.geoCentroid on TIGER-derived polygons. Distances shown on state-to-state pages are state-centroid straight-line distances. They are not driving miles, not a highway recommendation, and not a shipping zone. Driving distance requires a city pair and a routing provider.
Planning checklist
- Confirm whether the shipment is interstate (subject to federal household-goods rules) or intrastate.
- Look up the mover’s USDOT before paying a deposit. Open Mover Check.
- Read the estimate type. Open Quote Check.
- Storage between pickup and delivery is common on long corridors — treat unit size as a range. Storage calculator.
Check a mover for this corridor
Questions this page answers
- How many people moved from Montana to Washington according to the Census?
- The latest official figure is the ACS 2024 1-year estimate of people living in Washington whose residence one year earlier was Montana: 6,291 ± 2,249 (90% margin of error). It is a previous-residence statistic, not a count of household-goods shipments, trucks, or permanent relocations.
- Do more people move from Montana to Washington, or the other way?
- Montana to Washington is nominally larger (6,291 versus 3,631), but the difference of 2,660 is inside its own 90% margin of error (± 2,735). The table does not establish a net direction for this pair.
- How important is Washington as a destination for people leaving Montana?
- In ACS 2024, Washington ranks 1st of 45 recorded destinations for people whose residence one year earlier was Montana, taking 17.7% of that state's out-of-state movers. Ranks are competition ranks among cells with an estimate; ties share a rank.
- Is the Montana–Washington mileage on this page a driving distance?
- No. 508 miles is the state-centroid straight-line (great-circle) distance between TIGER-derived geographic centroids. It is not driving miles, not a highway recommendation, and not a shipping zone.
- Is 2024 still the latest official state-to-state migration table?
- Yes. The Census Bureau released 2024 State-to-State Migration Flows on 2026-01-21. No 2025 ACS state-to-state table is published. Calendar year is not the dataset year.
- How should I check a mover for a Montana to Washington shipment?
- Use the USDOT printed on the written estimate. Look the number up in Mover Check (live FMCSA MCMIS census) and confirm the record on FMCSA SAFER before paying a deposit. IMMERVEIL does not rank, score, or endorse carriers.
- How much does it cost to move from Montana to Washington?
- IMMERVEIL does not invent a mover price, fuel, or toll bracket. ACS Table T13 and the FMCSA census do not contain those figures. Quote Check performs arithmetic on the amount printed on your estimate — including the 110% collect-on-delivery figure for a qualifying interstate non-binding estimate.