Population of Maryland 2021
Population
5,938,737 people live in Maryland (as of 2013), of which 53.3% white, 30.1% black, 9.0% Hispanics, 6.1% Asians, 0.6% Indians.
Ancestry
The most commonly reported ancestors of Maryland residents are: German (15%), Irish (11%), English (8%), American (7%), Italian (6%), and Polish (3%).
Many immigrants from the Horn of Africa have settled in Maryland, with large communities in the suburbs of Washington DC (particularly Montgomery Counties and Prince George’s Counties) and the city of Baltimore. The Washington metropolitan area has the largest population of Ethiopians outside of Africa.
Religion
69 percent of the Maryland population identify as Christian. The largest religious groups in Maryland in 2010 were: the Catholic Church with 837,338 followers in Maryland, followed by non-denominational Evangelical Protestants with 298,921 members and the United Methodist Church with 238,774. The Southern Baptist Convention has 150,345 members. Judaism is the largest non-Christian religion in Maryland with 241,000 followers, or 4 percent of the total population. The World Headquarters of the Seven-Day Adventist Church and the national headquarters of the Ahmadiyya Muslims are located in Silver Spring, just outside the District of Columbia.
The English colony of Maryland of George Calvert was intended as a refuge for English Catholics. Baltimore was the seat of the first Catholic bishop in the United States. Despite its historical relevance to the Catholic Church in the United States, the percentage of Catholics in the state of Maryland is below the national average of 20%. Demographically, both Protestants and non-religious people are more numerous than Catholics.
Top Counties by Population in Maryland
| Rank | County Name | Population | Population Density (per km²) |
| 1 | Montgomery County | 1,004,720 | 765.21 |
| 2 | Prince George’s County | 881,149 | 683.06 |
| 3 | Baltimore County | 817,466 | 462.89 |
| 4 | Baltimore City | 621,353 | 2,610.73 |
| 5 | Anne Arundel County | 550,499 | 361.46 |
| 6 | Howard County | 299,441 | 455.08 |
| 7 | Harford County | 248,633 | 182.15 |
| 8 | Frederick County | 239,593 | 138.65 |
| 9 | Carroll County | 167,228 | 142.81 |
| 10 | Charles County | 150,603 | 90.45 |
| 11 | Washington County | 149,191 | 123.09 |
| 12 | St. Mary’s County | 108,998 | 68.90 |
| 13 | Cecil County | 101,707 | 93.91 |
| 14 | Wicomico County | 100,658 | 97.16 |
| 15 | Calvert County | 89,639 | 100.27 |
| 16 | Allegany County | 74,023 | 66.45 |
| 17 | Worcester County | 51,589 | 28.66 |
| 18 | Queen Anne’s County | 48,606 | 36.79 |
| 19 | Talbot County | 38,109 | 30.86 |
| 20 | Caroline County | 32,729 | 38.78 |
| 21 | Dorchester County | 32,562 | 23.28 |
| 22 | Garrett County | 29,865 | 17.58 |
| 23 | Somerset County | 26,264 | 16.60 |
| 24 | Kent County | 20,202 | 18.85 |