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2025 Compare Cities People:
Merrimack, NH vs Derry, NH

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Highlights
- Derry is 0% more densely populated than Merrimack.
- People are 10.0% less likely to be married in Derry.
- The Median Age is 3.1 years younger in Derry.
 Merrimack, NHDerry, NHUnited States
 Population  Unlock34,197329,725,481
 Female Population50.0%  Unlock50.5%
 Male Population50.0%  Unlock49.5%
 Median Age  Unlock3938.4
 space3
 Population - 201025,507  Unlock309,327,143
 Population - 2000  Unlock34,021285,036,114
 Population - 199022,156  Unlock251,960,433
 Pop. 2000 to Now  Unlock-1.7%15.6%
 Pop. 1990 to Now23.9%  Unlock30.8%
 space4
 Population Density  Unlock960.493.4
 Land Area32.5  Unlock3,531,905.4
 Water Area  Unlock0.9264,836.8
 space
 Est. Total Population By Age
 Merrimack, NHDerry, NHUnited States
 Age 0 to 45.2%  Unlock5.9%
 Age 5 to 9  Unlock5.2%6.1%
 Age 10 to 148.3%  Unlock6.6%
 Age 15 to 17  Unlock5.5%3.9%
 Age 18 to 203.5%  Unlock4.0%
 Age 21 to 24  Unlock4.7%5.2%
 Age 25 to 3412.7%  Unlock13.8%
 Age 35 to 44  Unlock13.7%12.9%
 Age 45 to 5413.8%  Unlock12.6%
 Age 55 to 59  Unlock8.2%6.7%
 Age 60 to 646.8%  Unlock6.3%
 Age 65 to 74  Unlock8.9%9.6%
 Age 75 to 844.7%  Unlock4.5%
 Age 85 and over  Unlock1.0%1.9%
 space1
 Race
 Merrimack, NHDerry, NHUnited States
 White86.4%  Unlock59.4%
 Black  Unlock0.9%12.2%
 Asian4.4%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races2.7%  Unlock3.2%
 Hispanic  Unlock4.6%18.4%
 space2
 Marriage & Family
 Merrimack, NHDerry, NHUnited States
 Married Population58.0%  Unlock49.8%
     Currently Married  Unlock49.6%48.0%
 Married but Separated0.6%  Unlock1.8%
 Single Population  Unlock47.7%50.2%
 Never Married27.5%  Unlock33.8%
 Divorced  Unlock10.2%10.8%
 Widowed3.8%  Unlock5.6%
 space5
 Household Size  Unlock2.622.60
 Households10,009  Unlock124,010,992
 Family Households  Unlock9,18080,755,759
     Married couple, w/children31.9%  Unlock30.5%
     Married couple, no children  Unlock43.3%42.9%
 Non Family Households2,738  Unlock43,255,233
     Single householder, w/children  Unlock16.6%15.8%
     Single householder, no children6.4%  Unlock10.8%
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Learn More About Merrimack, New Hampshire
Overview
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Learn More About Derry, New Hampshire
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