Counties in Maryland by employer firms

Montgomery County had the highest employer firms of 24 counties in 2021, at 20,081. Somerset County had the lowest, at 280. The median was 1,784 and the figure for Maryland was 98,103. Source: the U.S. Census Bureau.

Highest20,081Montgomery County

Lowest280Somerset County

Median1,78424 counties

Maryland98,103History

Map of counties, 2021

Under 1,000
1,000 to 1,500
1,500 to 2,600
2,600 to 8,200
8,200 and over

count, 2021. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Full ranking

Rank	Counties	2021 count	Change on 2020
1	Montgomery County	20,081	+0.1%
2	Baltimore County	14,958	+0.1%
3	Prince George's County	11,786	+2.3%
4	Anne Arundel County	10,929	+1.4%
5	Baltimore city	9,042	-0.6%
6	Howard County	7,702	-0.1%
7	Frederick County	4,998	+0.5%
8	Harford County	4,346	+0.3%
9	Carroll County	3,427	-0.7%
10	Washington County	2,651	-0.1%
11	Charles County	2,186	+3.2%
12	Wicomico County	1,966	+0.1%
13	Worcester County	1,602	+1%
14	St. Mary's County	1,579	-1.1%
15	Cecil County	1,458	+0.1%
16	Calvert County	1,436	+1.1%
17	Talbot County	1,211	+1%
18	Allegany County	1,182	-0.9%
19	Queen Anne's County	1,165	-1.2%
20	Garrett County	734	-0.8%
21	Dorchester County	575	-0.9%
22	Caroline County	510	-2.3%
23	Kent County	483	-1.4%
24	Somerset County	280	-3.1%

Other periods

About this ranking

Number of firms in the private nonfarm sectors covered by the US Census Bureau Business Dynamics Statistics. Establishments under common ownership form one firm.

Excludes nonemployer businesses. Differs from active_companies, the INE DIRCE count, which includes businesses without employees.

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. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.

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. (2025). Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties (Counties in Maryland by employer firms, 2021) [Data set]. Retrieved October 11, 2026, from https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv

MLA 9

Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in Maryland by employer firms, 2021. U.S. Census Bureau, 25 Sept. 2025, https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Invokely, https://invokely.ai/rankings/employer-firms/maryland-counties?period=2021. Accessed 11 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2025. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Counties in Maryland by employer firms, 2021. Dataset. Accessed October 11, 2026. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Also distributed by Invokely, https://invokely.ai/rankings/employer-firms/maryland-counties?period=2021.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in Maryland by employer firms, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv, via Invokely: https://invokely.ai/rankings/employer-firms/maryland-counties?period=2021 (Accessed: 11 October 2026).

BibTeX

@misc{census_counties_in_maryland_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in Maryland by employer firms, 2021}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv},
  urldate = {2026-10-11},
  note = {Accessed via Invokely, https://invokely.ai/rankings/employer-firms/maryland-counties?period=2021. Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023\_st\_cty.csv. Retrieved 2026-10-11.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in Maryland by employer firms, 2021
PY  - 2025
DA  - 2025/09/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv
L2  - https://invokely.ai/rankings/employer-firms/maryland-counties?period=2021
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firms/maryland-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.
ER  -

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Questions

Which county has the highest employer firms?

Montgomery County, with 20,081 in 2021, according to the U.S. Census Bureau.

Which county has the lowest employer firms?

Somerset County, with 280 in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.