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2025 Compare Cities People:
Arnold, MD vs Round Lake Beach, IL

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Highlights
- Round Lake Beach is 0% more densely populated than Arnold.
- People are 21.3% less likely to be married in Round Lake Beach.
- The Median Age is 5.0 years younger in Round Lake Beach.
 Arnold, MDRound Lake Beach, ILUnited States
 Population  Unlock27,412329,725,481
 Female Population51.2%  Unlock50.5%
 Male Population48.8%  Unlock49.5%
 Median Age  Unlock33.238.4
 space3
 Population - 201022,483  Unlock309,327,143
 Population - 2000  Unlock25,859285,036,114
 Population - 199020,261  Unlock251,960,433
 Pop. 2000 to Now  Unlock4.1%15.6%
 Pop. 1990 to Now17.7%  Unlock30.8%
 space4
 Population Density  Unlock5,432.493.4
 Land Area10.8  Unlock3,531,905.4
 Water Area  Unlock0.2264,836.8
 space
 Est. Total Population By Age
 Arnold, MDRound Lake Beach, ILUnited States
 Age 0 to 45.9%  Unlock5.9%
 Age 5 to 9  Unlock7.5%6.1%
 Age 10 to 148.4%  Unlock6.6%
 Age 15 to 17  Unlock5.7%3.9%
 Age 18 to 203.5%  Unlock4.0%
 Age 21 to 24  Unlock5.7%5.2%
 Age 25 to 348.7%  Unlock13.8%
 Age 35 to 44  Unlock14.4%12.9%
 Age 45 to 5413.4%  Unlock12.6%
 Age 55 to 59  Unlock6.4%6.7%
 Age 60 to 645.0%  Unlock6.3%
 Age 65 to 74  Unlock5.3%9.6%
 Age 75 to 843.6%  Unlock4.5%
 Age 85 and over  Unlock0.6%1.9%
 space1
 Race
 Arnold, MDRound Lake Beach, ILUnited States
 White77.1%  Unlock59.4%
 Black  Unlock5.1%12.2%
 Asian3.5%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.4%0.4%
 Two or More Races5.4%  Unlock3.2%
 Hispanic  Unlock50.7%18.4%
 space2
 Marriage & Family
 Arnold, MDRound Lake Beach, ILUnited States
 Married Population61.4%  Unlock49.8%
     Currently Married  Unlock47.1%48.0%
 Married but Separated2.0%  Unlock1.8%
 Single Population  Unlock51.7%50.2%
 Never Married26.5%  Unlock33.8%
 Divorced  Unlock9.8%10.8%
 Widowed3.1%  Unlock5.6%
 space5
 Household Size  Unlock3.262.60
 Households8,633  Unlock124,010,992
 Family Households  Unlock6,44280,755,759
     Married couple, w/children42.1%  Unlock30.5%
     Married couple, no children  Unlock32.3%42.9%
 Non Family Households1,845  Unlock43,255,233
     Single householder, w/children  Unlock20.3%15.8%
     Single householder, no children7.9%  Unlock10.8%
Voting
Reviews for Arnold    1 Reviews
kristen · Arnold, MD
healthcare
Over 19 years ago

Wonderful place to raise a family but real estate has gotten very  More

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Reviews for Round Lake Beach    1 Reviews
Abhd · Round Lake, IL
Good Services and Quality of Life for Low Cost of
Over 16 years ago

I'm a long time resident (more than 17 years). Round Lake Beach has a lower average cost of housing than other nearby cities. A wide variety of people of ages and  More

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Learn More About Arnold, Maryland
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Learn More About Round Lake Beach, Illinois
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