Counties in Maryland by median household income (US single-year estimate)

Howard County had the highest median household income (US single-year estimate) of 24 counties in 2018, at $116,719. Somerset County had the lowest, at $42,098. The median was $74,288 and the figure for Maryland was $83,076. Source: the U.S. Census Bureau.

Highest116,719Howard County

Lowest42,098Somerset County

Median74,28824 counties

Maryland83,076History

Map of counties, 2018

Under 53K
53K to 63K
63K to 87K
87K to 96K
96K and over

USD, 2018. Source: U.S. Census Bureau, Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

USD. Source: U.S. Census Bureau, Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2018 USD	Change on 2017
1	Howard County	116,719	+4.6%
2	Montgomery County	107,758	+4.7%
3	Calvert County	106,270	+6.3%
4	Anne Arundel County	97,051	+1%
5	Carroll County	95,956	+3.3%
6	Frederick County	95,196	+3.8%
7	Queen Anne's County	93,751	+3.4%
8	Charles County	92,616	-2%
9	St. Mary's County	89,964	+9.1%
10	Harford County	87,959	+8.7%
11	Prince George's County	82,445	+2%
12	Baltimore County	75,836	+3.4%
13	Cecil County	72,739	+0.7%
14	Talbot County	64,245	-9%
15	Washington County	62,556	+4.6%
16	Worcester County	59,266	-3.5%
17	Caroline County	56,627	+0.5%
18	Kent County	55,514	-3.9%
19	Wicomico County	54,313	+3.8%
20	Baltimore city	50,501	+8%
21	Garrett County	49,147	+4.8%
22	Dorchester County	48,682	+3.6%
23	Allegany County	43,535	+2.3%
24	Somerset County	42,098	+4.4%

Other periods

About this ranking

Household income at the middle of the distribution for one year, in US dollars of that year. United States: Census Bureau Small Area Income and Poverty Estimates (SAIPE) for the nation, states and counties.

A model-based estimate that combines the one-year American Community Survey with federal tax records and other administrative data, so every county gets a figure for a single year. The national figure is the one-year ACS estimate. Not adjusted for inflation between years. The Census Bureau advises comparing years from 2006 on only. For the five-year ACS median, which also covers cities, use median_household_income.

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. Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt. 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). Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties (Counties in Maryland by median household income (US single-year estimate), 2018) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt

MLA 9

Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties, Counties in Maryland by median household income (US single-year estimate), 2018. U.S. Census Bureau, 27 Jan. 2026, https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt. Invokely, https://invokely.ai/rankings/median-household-income-single-year-us/maryland-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. Counties in Maryland by median household income (US single-year estimate), 2018. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt. Also distributed by Invokely, https://invokely.ai/rankings/median-household-income-single-year-us/maryland-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties, Counties in Maryland by median household income (US single-year estimate), 2018 [Dataset]. Available at: https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt, via Invokely: https://invokely.ai/rankings/median-household-income-single-year-us/maryland-counties?period=2018 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_maryland_by_2018,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties: Counties in Maryland by median household income (US single-year estimate), 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/median-household-income-single-year-us/maryland-counties?period=2018. Publisher attribution: U.S. Census Bureau. Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties: Counties in Maryland by median household income (US single-year estimate), 2018
PY  - 2026
DA  - 2026/01/27
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt
L2  - https://invokely.ai/rankings/median-household-income-single-year-us/maryland-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-household-income-single-year-us/maryland-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. https://www2.census.gov/programs-surveys/saipe/datasets/2018/2018-state-and-county/est18all.txt. Retrieved 2026-10-12.
ER  -

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rank_places {"indicator":"median_household_income_saipe","level":"province","within":"Maryland","limit":10}
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Questions

Which county has the highest median household income (US single-year estimate)?

Howard County, with $116,719 in 2018, according to the U.S. Census Bureau.

Which county has the lowest median household income (US single-year estimate)?

Somerset County, with $42,098 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, Small Area Income and Poverty Estimates (SAIPE): median household income, nation, states and counties. Retrieved 2026-10-12.