Maryland Population By County (2018)
Created on February 23, 2020.
Data Updated on May 9, 2021.

According to the US Census Bureau population estimates, there were 6,035,802 people living in Maryland in 2018. Montgomery County was the most populated county with 1,048,478 residents, followed by Prince George's County with 909,619 residents, and Baltimore County with 827,859 residents. Kent County with a population of 19,434 was the least populated county in Maryland in 2018.

Use the map below to interactively explore the population of each county in Maryland in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
Maryland Population By County (2018)
Table of Maryland Population By County (2018)
Items per page:
0 of 0
County Population % of State Population
Allegany 70,941 1.18%
Anne Arundel 575,523 9.54%
Baltimore 827,859 13.72%
Calvert 92,065 1.53%
Caroline 33,306 0.55%
Carroll 168,267 2.79%
Cecil 102,644 1.70%
Charles 161,476 2.68%
Dorchester 31,960 0.53%
Frederick 254,943 4.22%
Garrett 29,133 0.48%
Harford 253,882 4.21%
Howard 322,621 5.35%
Kent 19,434 0.32%
Montgomery 1,048,478 17.37%
Prince George's 909,619 15.07%
Queen Anne's 50,148 0.83%
St. Mary's 112,720 1.87%
Somerset 25,606 0.42%
Talbot 37,074 0.61%
Washington 150,656 2.50%
Wicomico 103,044 1.71%
Worcester 51,960 0.86%
Baltimore city 602,443 9.98%