Counties in Maryland by employer firms

Montgomery County had the highest employer firms of 24 counties in 2018, at 20,090. Somerset County had the lowest, at 299. The median was 1,786 and the figure for Maryland was 97,538. Source: the U.S. Census Bureau.

Highest20,090Montgomery County

Lowest299Somerset County

Median1,78624 counties

Maryland97,538History

Map of counties, 2018

Under 1,000
1,000 to 1,500
1,500 to 2,600
2,600 to 8,300
8,300 and over

count, 2018. 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, 2018

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	2018 count	Change on 2017
1	Montgomery County	20,090	+0.5%
2	Baltimore County	14,892	-0.3%
3	Prince George's County	11,337	+0.8%
4	Anne Arundel County	10,741	+0.1%
5	Baltimore city	9,182	-0.1%
6	Howard County	7,634	+1.3%
7	Frederick County	4,976	+0.3%
8	Harford County	4,272	+0.5%
9	Carroll County	3,449	+0.2%
10	Washington County	2,693	-0.2%
11	Charles County	2,090	-1.1%
12	Wicomico County	1,976	-1%
13	St. Mary's County	1,596	+0.9%
14	Worcester County	1,573	+1.7%
15	Cecil County	1,454	+0.1%
16	Calvert County	1,429	-0.3%
17	Talbot County	1,251	+2%
18	Allegany County	1,230	-1.7%
19	Queen Anne's County	1,172	-1.3%
20	Garrett County	749	+0.9%
21	Dorchester County	587	-0.2%
22	Caroline County	516	+0.8%
23	Kent County	506	-3.1%
24	Somerset County	299	-3.2%

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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in Maryland by employer firms, 2018 [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=2018 (Accessed: 11 October 2026).

BibTeX

@misc{census_counties_in_maryland_by_2018,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in Maryland by employer firms, 2018}},
  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=2018. 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, 2018
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=2018
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firms/maryland-counties?period=2018.
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 20,090 in 2018, according to the U.S. Census Bureau.

Which county has the lowest employer firms?

Somerset County, with 299 in 2018.

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.