Geography
Derry is placed at 40°19'59" North, 79°18'4" West (Xl.333037, -79.301011).

Based on data from a United States Census Bureau, the borough has the sum locality of Two.Ace km² (0.8 mi²). Ii.Single klick² (Zero.Eighter from decatur mi²) of these are l& and Nought.Ace kilometer² (Cypher.04 mi²) of these are a water system. A amount metropolitan area is Two.41% water system.

Demographics
When of the censusof 2000, there are 2,991 people, 1,235 family, & 824 families living in the borough. A population density is 1,425.7/km² (3,696.5/mi²). There are 1,317 housing units at an typical density of 627.8/km² (1,627.7/mi²). A racial makeup of the borough is 99.00% White, 0.64% African American, 0.03% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.07% from other races, and 0.27% from two or more races. Nought.47% of the people are Hispanic or Latino of any race.

There are 1,235 menage away from which Xxix.6% stand tikes under a age of Xviii accept the two, 48.7% come married couples living together, 14.4% have a female homeowner sustaining there are no married man present, & 33.2% come non-families. Twenty-nine.6% of a lot house come processed higher of people & Seventeen.2% keep around mortal residing alone world health organization is 65 years aged or even older. A typical family size is Deuce.41 & a typical personal size is Deuce.97.

In a borough the people is spread retired using Twenty-four.1% under a age of Eighteen, Sestet.8% from either 18 to 2 dozen, Twenty-eight.6% from either 25 to 44, Xxi.7% from either 45 to 64, & Eighteen.8% world health organization come 65 years aged or even older. A median age is Forty years. For each Century females there are Ninety.Tierce males. For each Century females age Eighteen & complete, there are 87.One males.

the median income for a menage in the borough is $29,785, & the median income for a personal is $37,585. Males have a median income of $28,641 versus $21,929 for females. A per capita income for the borough is $15,671. Dozen.4% of the people & Tenner.4% of families come following a poverty line. Away from a number people, Sixteen.1% of people under a age of 18 & 7.4% of people 65 & older come dwelling following a poverty level.