Montgomery County, Maryland Age & Gender Statistics (2024)

Total Population

1,065,949

Median Age

40.2

Male Median

38.9

Female Median

41.5

Montgomery County, Maryland Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Montgomery County, Maryland Demographic Trend

Since 2010, the population of has changed by +12.5%%.

+12.5%% Growth

Montgomery County, Maryland Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Montgomery County, Maryland Historical Population Data

YearMedian AgePopulation
202440.21,065,949
202340.11,057,586
202239.81,056,910
202139.61,057,201
202039.41,047,661
201939.21,043,530
201839.01,040,133
201738.81,039,198
201638.61,026,371
201538.51,017,859
201438.51,005,087
201338.4989,474
201238.4974,824
201138.3959,738
201038.2947,230

Montgomery County, Maryland Age Group Breakdown (2024)

Age CohortPercentage
Under 55.7%
5–1717.1%
18–247.8%
25–3412.0%
35–5427.4%
55–6413.0%
65+17.0%

Dependency Ratios for Montgomery County, Maryland

Total Dependency Ratio:
66.1
Youth Dependency:
37.9
Old-Age Dependency:
28.2

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Montgomery County, Maryland

The median age in Montgomery County, Maryland is 40.2 years.

According to latest Census data, the total population of Montgomery County, Maryland is 1,065,949.

In Montgomery County, Maryland, seniors (ages 65+) make up 17.0% of the population, while children under 18 represent 17.1%.

Based on historical data since 2010, the population in Montgomery County, Maryland is aging.
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