Counties in Maryland by net international migration, July to June

Montgomery County had the highest net international migration, July to June of 24 counties in 2020, at 4,680. Garrett County had the lowest, at 0. The median was 55 and the figure for Maryland was 13,078. Source: the U.S. Census Bureau.

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Highest4,680Montgomery County
Median5524 counties
Maryland13,078History

Map of counties, 2020

Allegany County: 33 personsAnne Arundel County: 317 personsBaltimore County: 1,500 personsCalvert County: 16 personsCaroline County: 45 personsCarroll County: 47 personsCecil County: 16 personsCharles County: 101 personsDorchester County: 13 personsFrederick County: 387 personsGarrett County: 0 personsHarford County: 156 personsHoward County: 689 personsKent County: 6 personsMontgomery County: 4,680 personsPrince George's County: 3,520 personsQueen Anne's County: 35 personsSt. Mary's County: 62 personsSomerset County: 25 personsTalbot County: 13 personsWashington County: 102 personsWicomico County: 191 personsWorcester County: 33 personsBaltimore city: 1,091 persons
  • Under 20
  • 20 to 40
  • 40 to 100
  • 100 to 510
  • 510 and over
persons, 2020. Source: U.S. Census Bureau, Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

Montgomery County: 4,680 personsMontgomery County4,680Prince George's County: 3,520 personsPrince George's County3,520Baltimore County: 1,500 personsBaltimore County1,500Baltimore city: 1,091 personsBaltimore city1,091Howard County: 689 personsHoward County689Frederick County: 387 personsFrederick County387Anne Arundel County: 317 personsAnne Arundel County317Wicomico County: 191 personsWicomico County191Harford County: 156 personsHarford County156Washington County: 102 personsWashington County102Charles County: 101 personsCharles County101St. Mary's County: 62 personsSt. Mary's County62Carroll County: 47 personsCarroll County47Caroline County: 45 personsCaroline County45Queen Anne's County: 35 personsQueen Anne's County35Allegany County: 33 personsAllegany County33Worcester County: 33 personsWorcester County33Somerset County: 25 personsSomerset County25Calvert County: 16 personsCalvert County16Cecil County: 16 personsCecil County16Dorchester County: 13 personsDorchester County13Talbot County: 13 personsTalbot County13Kent County: 6 personsKent County6Garrett County: 0 personsGarrett County0Montgomery County: 4,680 personsMontgomery County4,680Prince George's County: 3,520 personsPrince George's County3,520Baltimore County: 1,500 personsBaltimore County1,500Baltimore city: 1,091 personsBaltimore city1,091Howard County: 689 personsHoward County689Frederick County: 387 personsFrederick County387Anne Arundel County: 317 personsAnne Arundel County317Wicomico County: 191 personsWicomico County191Harford County: 156 personsHarford County156Washington County: 102 personsWashington County102Charles County: 101 personsCharles County101St. Mary's County: 62 personsSt. Mary's County62Carroll County: 47 personsCarroll County47Caroline County: 45 personsCaroline County45Queen Anne's County: 35 personsQueen Anne's County35Allegany County: 33 personsAllegany County33Worcester County: 33 personsWorcester County33Somerset County: 25 personsSomerset County25Calvert County: 16 personsCalvert County16Cecil County: 16 personsCecil County16Dorchester County: 13 personsDorchester County13Talbot County: 13 personsTalbot County13Kent County: 6 personsKent County6Garrett County: 0 personsGarrett County0
persons. Source: U.S. Census Bureau, Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.

Full ranking

RankCounties2020
persons
Change on 2019
1Montgomery County Estimated4,680-23.3%
2Prince George's County Estimated3,520-23.8%
3Baltimore County Estimated1,500-22.7%
4Baltimore city Estimated1,091-19.4%
5Howard County Estimated689-19.6%
6Frederick County Estimated387-18.5%
7Anne Arundel County Estimated317-18.9%
8Wicomico County Estimated191-19.1%
9Harford County Estimated156-6%
10Washington County Estimated102+8.5%
11Charles County Estimated101-17.9%
12St. Mary's County Estimated62-24.4%
13Carroll County Estimated47-26.6%
14Caroline County Estimated45-27.4%
15Queen Anne's County Estimated35-16.7%
16Allegany County Estimated33-8.3%
16Worcester County Estimated33-5.7%
18Somerset County Estimated250%
19Calvert County Estimated16-48.4%
19Cecil County Estimated16+128.6%
21Dorchester County Estimated13+333.3%
21Talbot County Estimated13-7.1%
23Kent County Estimated6+20%
24Garrett County Estimated0+100%

Other periods

About this ranking

Estimated moves into the area from abroad minus moves out of the area to other countries, from July 1 of the previous year through June 30 of the reported year.

More on how it is measured
  • United States: Census Bureau estimates, including people born in the United States and abroad, moves between the states and Puerto Rico, and net movement of the Armed Forces overseas.
  • Canada: Statistics Canada immigrants, minus net emigration, plus the net change in non-permanent residents.
  • Australia: ABS net overseas migration for the financial year.
  • United Kingdom local authorities: Office for National Statistics mid-year estimates, counting people who move for at least 12 months.

A component of each country's official population estimates. Methods differ between the statistical offices, so compare places within a country first. Differs from the World Bank net_migration series, which uses calendar years and a different method.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Maryland by net international migration, July to June, 2020) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Maryland by net international migration, July to June, 2020. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/net-international-migration-july-june/maryland-counties?period=2020. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Maryland by net international migration, July to June, 2020. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/net-international-migration-july-june/maryland-counties?period=2020.

Harvard

U.S. Census Bureau (2026) Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Maryland by net international migration, July to June, 2020 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-international-migration-july-june/maryland-counties?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maryland_by_2020,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Maryland by net international migration, July to June, 2020}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/maryland-counties?period=2020. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Maryland by net international migration, July to June, 2020
PY  - 2026
DA  - 2026/03/26
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/net-international-migration-july-june/maryland-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/maryland-counties?period=2020.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest net international migration, July to June?

Montgomery County, with 4,680 in 2020, according to the U.S. Census Bureau.

Which county has the lowest net international migration, July to June?

Garrett County, with 0 in 2020.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.

Net international migration, July to June: other rankings

Counties in Maryland: more rankings