Maryland Population By County in 2018
Updated on January 29, 2024.
According to the US Census Bureau population estimates, there were 6,042,153 people living in Maryland in 2018. Montgomery County was the most populated county with 1,048,794 residents, followed by Prince George's County with 911,372 residents, and Baltimore County with 828,547 residents. Kent County with a population of 19,467 was the least populated county in Maryland in 2018.
Use the map below to interactively explore the population for each county in Maryland in 2018. The data can also be explored further by sorting and filtering with the table below.
You can see similar information for other states and by state for the United States.
Related Topics: Maryland Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
Maryland Population By County (2018)
Table of Maryland Population By County in 2018
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| County | Population | % of State Population |
|---|---|---|
| Allegany | 70,977 | 1.18% |
| Anne Arundel | 575,641 | 9.53% |
| Baltimore | 828,547 | 13.71% |
| Calvert | 92,131 | 1.53% |
| Caroline | 33,341 | 0.55% |
| Carroll | 168,421 | 2.79% |
| Cecil | 102,816 | 1.70% |
| Charles | 161,879 | 2.68% |
| Dorchester | 31,894 | 0.53% |
| Frederick | 255,698 | 4.23% |
| Garrett | 29,202 | 0.48% |
| Harford | 253,884 | 4.20% |
| Howard | 322,895 | 5.34% |
| Kent | 19,467 | 0.32% |
| Montgomery | 1,048,794 | 17.36% |
| Prince George's | 911,372 | 15.08% |
| Queen Anne's | 50,279 | 0.83% |
| St. Mary's | 112,948 | 1.87% |
| Somerset | 25,637 | 0.42% |
| Talbot | 37,052 | 0.61% |
| Washington | 150,699 | 2.49% |
| Wicomico | 103,398 | 1.71% |
| Worcester | 51,940 | 0.86% |
| Baltimore city | 603,241 | 9.98% |