Immigration in Maine

Foreign-born population, origins and migration flows.

Foreign-born residents
4.7%
2024 · Census American Community Survey 1-year estimates
Foreign-born residents who are naturalized citizens
50.4%
2024 · Census American Community Survey 1-year estimates
Total net migration
11,446
2025 · Census Bureau Population Estimates Program
Net international migration
4,040
2025 · Census Bureau Population Estimates Program
Net domestic migration
7,406
2025 · Census Bureau Population Estimates Program
Foreign-born
≈ 52,000
3.7%
Naturalized citizens
≈ 28,000
Non-citizen residents
≈ 24,000

Historical data

Pick an indicator to see its long-run evolution.

Foreign-born share

1900–2023
3.7%

Share of residents born outside the U.S.

Foreign-Born Population

Foreign-born residents made up about 3.7% of Maine's population in 2023, one of the lowest shares in the nation.

Foreign-born residents
4.7%
2024 · Census American Community Survey 1-year estimates
Foreign-born population
65,815
2024 · Census American Community Survey 1-year estimates
Foreign-Born Share
3.7%
US Average
13.9%
Estimated Foreign-Born Residents
~52,000

Foreign-born residents

2006–2024
4.7%

Census American Community Survey 1-year estimates, share of total population, B05002 (2020 not released).

Foreign-born population

2006–2024
65,815▲ 57%

Census American Community Survey 1-year estimates, B05002 (2020 not released).

IndicatorMaineU.S.
Foreign-Born Share (%)3.713.9
  • •Portland and Lewiston have become key resettlement hubs for asylum seekers in Maine.

Countries of Origin

Among Maine's foreign-born residents, top countries of origin include Canada, Somalia, Angola, and Congo (DRC).

Foreign-born residents who are naturalized citizens
50.4%
2024 · Census American Community Survey 1-year estimates
Top Origin
Canada
Leading African Nation
Somalia
French-at-Home Speakers
3.1%

Foreign-born residents who are naturalized citizens

2006–2024
50.4%

Census American Community Survey 1-year estimates, B05002 (2020 not released).

IndicatorMaineU.S.
French-at-Home Speakers (%)3.10.5
  • •Maine has the highest share of residents speaking French at home of any U.S. state, at 3.1%.

Migration Flows

Combined migration added roughly 7,400 residents to Maine in 2023, making migration the primary driver of the state's population growth.

Total net migration
11,446
2025 · Census Bureau Population Estimates Program
Net international migration
4,040
2025 · Census Bureau Population Estimates Program
Total Net Migration
+7,400
Natural Change
-2,100
Overall Population Growth
+0.4%

Total net migration

2011–2025
11,446

Census Bureau Population Estimates Program, international plus domestic net migration, July–June years (2020 partial year omitted).

Net international migration

2011–2025
4,040▲ 219%

Census Bureau Population Estimates Program, net international migration, July–June years (2020 partial year omitted).

IndicatorMaineU.S.
Net Migration (thousands)7.41200
  • •Maine's natural population change has been negative since 2011, making migration essential to growth.

International Migration

Maine gained roughly 3,800 net international migrants in 2023, contributing to modest overall population growth.

Net international migration
4,040
2025 · Census Bureau Population Estimates Program
Net International Migration
+3,800
Year
2023
Share of Total Population Growth
~45%

Net international migration

2011–2025
4,040▲ 219%

Census Bureau Population Estimates Program, net international migration, July–June years (2020 partial year omitted).

IndicatorMaineU.S.
Net International Migration (thousands)3.81200
  • •International migration accounted for nearly half of Maine's population growth in 2023.

Domestic Migration

Maine saw net domestic in-migration of about 3,600 residents in 2023, continuing a pandemic-era trend of relocation from other states.

Net domestic migration
7,406
2025 · Census Bureau Population Estimates Program
Net Domestic Migration
+3,600
Year
2023
Top Origin State
Massachusetts

Net domestic migration

2011–2025
7,406

Census Bureau Population Estimates Program, net domestic migration to/from other states, July–June years (2020 partial year omitted).

IndicatorMaineU.S.
Net Domestic Migration (thousands)3.60
  • •Many new Maine residents in recent years relocated from Massachusetts and New York.

More figures

Annual refugee & asylee arrivals
≈ 1,500/yr
Top origin
Canada
2nd origin
Somalia
3rd origin
DR Congo
Undocumented residents
≈ 6,000
Est.