34 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Dundalk | 1 | 67,002 | 63,826 | 0.34% | 5,119 | 13.09 | CDP |
| Towson | 2 | 58,222 | 57,542 | 0.35% | 4,114 | 14.15 | CDP |
| Woodlawn | 3 | 43,329 | 41,505 | 0.84% | 4,542 | 9.54 | CDP |
| Catonsville | 4 | 43,067 | 41,592 | 0.23% | 3,085 | 13.96 | CDP |
| Essex | 5 | 41,237 | 39,307 | 0.32% | 4,453 | 9.26 | CDP |
| Randallstown | 6 | 37,171 | 35,661 | 0.86% | 3,636 | 10.22 | CDP |
| Owings Mills | 7 | 36,093 | 34,711 | 1.02% | 3,786 | 9.53 | CDP |
| Pikesville | 8 | 34,935 | 32,871 | 0.8% | 2,829 | 12.35 | CDP |
| Middle River | 9 | 32,646 | 29,665 | 1.55% | 2,559 | 12.76 | CDP |
| Milford Mill | 10 | 32,131 | 30,355 | 0.65% | 4,626 | 6.95 | CDP |
| Parkville | 11 | 30,467 | 30,459 | -0.06% | 7,110 | 4.29 | CDP |
| Perry Hall | 12 | 29,450 | 27,778 | 0.22% | 4,245 | 6.94 | CDP |
| Carney | 13 | 29,205 | 29,624 | -0.17% | 4,169 | 7.01 | CDP |
| Ilchester | 14 | 28,256 | 26,873 | 1.14% | 2,627 | 10.76 | CDP |
| Reisterstown | 15 | 28,028 | 27,804 | 0.49% | 5,504 | 5.09 | CDP |
| Lochearn | 16 | 27,514 | 25,612 | 0.53% | 4,922 | 5.59 | CDP |
| Cockeysville | 17 | 23,863 | 22,602 | 0.87% | 1,993 | 11.97 | CDP |
| Rosedale | 18 | 20,258 | 19,963 | 0.33% | 2,952 | 6.86 | CDP |
| Arbutus | 19 | 20,048 | 19,267 | -0.14% | 3,072 | 6.53 | CDP |
| Rossville | 20 | 15,592 | 15,993 | 0.19% | 2,899 | 5.38 | CDP |
| Honeygo | 21 | 15,056 | 11,558 | 7.14% | 2,573 | 5.85 | CDP |
| Joppatowne | 22 | 13,585 | 12,833 | 0.48% | 2,019 | 6.73 | CDP |
| Overlea | 23 | 12,924 | 12,063 | 0.34% | 4,285 | 3.02 | CDP |
| Mays Chapel | 24 | 12,219 | 12,229 | 0.44% | 2,725 | 4.48 | CDP |
| Timonium | 25 | 11,010 | 10,642 | 0.66% | 1,924 | 5.72 | CDP |
| White Marsh | 26 | 10,543 | 9,096 | 0.66% | 1,985 | 5.31 | CDP |
| Garrison | 27 | 9,999 | 8,794 | 0.79% | 3,166 | 3.16 | CDP |
| Lansdowne | 28 | 9,465 | 8,635 | 0.74% | 4,159 | 2.28 | CDP |
| Edgemere | 29 | 8,932 | 8,652 | 0.2% | 822 | 10.87 | CDP |
| Baltimore Highlands | 30 | 8,390 | 7,880 | 1.1% | 4,839 | 1.73 | CDP |
| Bowleys Quarters | 31 | 6,744 | 6,422 | 0% | 2,144 | 3.15 | CDP |
| Lutherville | 32 | 6,618 | 6,715 | 0.12% | 3,131 | 2.11 | CDP |
| Hampton | 33 | 5,087 | 4,706 | 0.04% | 855 | 5.95 | CDP |
| Kingsville | 34 | 4,735 | 4,649 | 0.57% | 472 | 10.04 | CDP |
Dundalk is the largest city in Baltimore County, with a population of 67,002.
Kingsville is the smallest city in Baltimore County.
There are 34 cities in Baltimore County, Maryland.