The graph below ranks each Maryland County by total residents according to the 2012 census estimates.

Maryland total population by county

CountyTotal Population
MontgomeryMontgomery County total population - 10044761,004,476
Prince George'sPrince George's County total population - 881419881,419
BaltimoreBaltimore County total population - 817682817,682
City of BaltimoreCity of Baltimore County total population - 622417622,417
Anne ArundelAnne Arundel County total population - 550175550,175
HowardHoward County total population - 299356299,356
HarfordHarford County total population - 248540248,540
FrederickFrederick County total population - 239520239,520
CarrollCarroll County total population - 167210167,210
CharlesCharles County total population - 150710150,710
WashingtonWashington County total population - 149087149,087
St. Mary'sSt. Mary's County total population - 108993108,993
CecilCecil County total population - 101684101,684
WicomicoWicomico County total population - 100521100,521
CalvertCalvert County total population - 8969489,694
AlleganyAllegany County total population - 7386973,869
WorcesterWorcester County total population - 5156751,567
Queen Anne'sQueen Anne's County total population - 4854248,542
TalbotTalbot County total population - 3804038,040
CarolineCaroline County total population - 3264432,644
DorchesterDorchester County total population - 3255432,554
GarrettGarrett County total population - 2985029,850
SomersetSomerset County total population - 2620626,206
KentKent County total population - 2011220,112

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Maryland population comparison tables
Total: Total
Total Percentage
Total Percentage
Total Percentage
American Indian:
Total Percentage
Hawaiian & Pacific Islander:
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Mixed Race:
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