Data / Rankings / Net domestic migration, July to June / Counties in Maryland

Counties in Maryland by net domestic migration, July to June

Frederick County had the highest net domestic migration, July to June of 24 counties in 2020, at 3,195. Baltimore city had the lowest, at -9,720. The median was 9 and the figure for Maryland was -26,379. Source: the U.S. Census Bureau.

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Highest3,195Frederick County
Lowest-9,720Baltimore city
Median924 counties
Maryland-26,379History

Map of counties, 2020

Allegany County: -225 personsAnne Arundel County: 779 personsBaltimore County: -4,509 personsCalvert County: 341 personsCaroline County: -109 personsCarroll County: 266 personsCecil County: 250 personsCharles County: 50 personsDorchester County: 29 personsFrederick County: 3,195 personsGarrett County: -81 personsHarford County: 796 personsHoward County: 255 personsKent County: -65 personsMontgomery County: -9,065 personsPrince George's County: -9,475 personsQueen Anne's County: 487 personsSt. Mary's County: 462 personsSomerset County: -108 personsTalbot County: -12 personsWashington County: -53 personsWicomico County: -324 personsWorcester County: 457 personsBaltimore city: -9,720 persons
  • Under -1,700
  • -1,700 to -100
  • -100 to 0
  • 0 to 300
  • 300 to 500
  • 500 and over
persons, 2020. Red areas are below zero and blue areas above it. Source: U.S. Census Bureau, Population Estimates Program: net domestic migration, states and counties, 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

Frederick County: 3,195 personsFrederick County3,195Harford County: 796 personsHarford County796Anne Arundel County: 779 personsAnne Arundel County779Queen Anne's County: 487 personsQueen Anne's County487St. Mary's County: 462 personsSt. Mary's County462Worcester County: 457 personsWorcester County457Calvert County: 341 personsCalvert County341Carroll County: 266 personsCarroll County266Howard County: 255 personsHoward County255Cecil County: 250 personsCecil County250Charles County: 50 personsCharles County50Dorchester County: 29 personsDorchester County29Talbot County: -12 personsTalbot County-12Washington County: -53 personsWashington County-53Kent County: -65 personsKent County-65Garrett County: -81 personsGarrett County-81Somerset County: -108 personsSomerset County-108Caroline County: -109 personsCaroline County-109Allegany County: -225 personsAllegany County-225Wicomico County: -324 personsWicomico County-324Baltimore County: -4,509 personsBaltimore County-4,509Montgomery County: -9,065 personsMontgomery County-9,065Prince George's County: -9,475 personsPrince George's County-9,475Baltimore city: -9,720 personsBaltimore city-9,720Frederick County: 3,195 personsFrederick County3,195Harford County: 796 personsHarford County796Anne Arundel County: 779 personsAnne Arundel County779Queen Anne's County: 487 personsQueen Anne's County487St. Mary's County: 462 personsSt. Mary's County462Worcester County: 457 personsWorcester County457Calvert County: 341 personsCalvert County341Carroll County: 266 personsCarroll County266Howard County: 255 personsHoward County255Cecil County: 250 personsCecil County250Charles County: 50 personsCharles County50Dorchester County: 29 personsDorchester County29Talbot County: -12 personsTalbot County-12Washington County: -53 personsWashington County-53Kent County: -65 personsKent County-65Garrett County: -81 personsGarrett County-81Somerset County: -108 personsSomerset County-108Caroline County: -109 personsCaroline County-109Allegany County: -225 personsAllegany County-225Wicomico County: -324 personsWicomico County-324Baltimore County: -4,509 personsBaltimore County-4,509Montgomery County: -9,065 personsMontgomery County-9,065Prince George's County: -9,475 personsPrince George's County-9,475Baltimore city: -9,720 personsBaltimore city-9,720
persons. Source: U.S. Census Bureau, Population Estimates Program: net domestic migration, states and counties, 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
1Frederick County Estimated3,195-6.1%
2Harford County Estimated796-26.8%
3Anne Arundel County Estimated779-52.1%
4Queen Anne's County Estimated487+151%
5St. Mary's County Estimated462+68%
6Worcester County Estimated457-18.4%
7Calvert County Estimated341-5%
8Carroll County Estimated266+55.6%
9Howard County Estimated255-60.5%
10Cecil County Estimated250+150%
11Charles County Estimated50-95.2%
12Dorchester County Estimated29+141.7%
13Talbot County Estimated-12-104.3%
14Washington County Estimated-53-122.7%
15Kent County Estimated-65-168.4%
16Garrett County Estimated-81-65.3%
17Somerset County Estimated-108-550%
18Caroline County Estimated-109-741.2%
19Allegany County Estimated-225+20.8%
20Wicomico County Estimated-324-284.1%
21Baltimore County Estimated-4,509-44.9%
22Montgomery County Estimated-9,065+5.1%
23Prince George's County Estimated-9,475+0.2%
24Baltimore city Estimated-9,720+10.4%

Other periods

About this ranking

Estimated moves into an area from elsewhere in the same country minus moves out to the rest of the country, from July 1 of the previous year through June 30 of the reported year.

More on how it is measured
  • United States: states and counties.
  • Canada: provinces and territories, net interprovincial migration (Statistics Canada).
  • United Kingdom: local authorities, counting moves between any two UK local authorities, including across the borders of England, Wales, Scotland and Northern Ireland (ONS internal migration).
  • A negative value means more people left than arrived.

Sums to zero, or close to it, for each country as a whole, so there is no national value.

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 domestic migration, states and counties, 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 domestic migration, states and counties, 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 domestic 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 domestic migration, states and counties, 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 domestic 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-domestic-migration-july-june/maryland-counties?period=2020. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration, states and counties, 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 domestic 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-domestic-migration-july-june/maryland-counties?period=2020.

Harvard

U.S. Census Bureau (2026) Population Estimates Program: net domestic migration, states and counties, 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 domestic 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-domestic-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 domestic migration, states and counties, 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 domestic 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-domestic-migration-july-june/maryland-counties?period=2020. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, 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 domestic migration, states and counties, 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 domestic 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-domestic-migration-july-june/maryland-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/maryland-counties?period=2020.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, 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 domestic migration, July to June?

Frederick County, with 3,195 in 2020, according to the U.S. Census Bureau.

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

Baltimore city, with -9,720 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 domestic migration, states and counties, 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 domestic migration, July to June: other rankings

Counties in Maryland: more rankings