Londonderry is a city located in Rockingham County New Hampshire. Londonderry has a 2020 population of 11,841. Londonderry is currently declining at a rate of 0.00% annually and its population has increased by 7.28% since the most recent census, which recorded a population of 11,037 in 2010. Londonderry reached it's highest population of in .
The average household income in Londonderry is $109,026 with a poverty rate of 3.00%. The median rental costs in recent years comes to $1,459 per month, and the median house value is $310,200. The median age in Londonderry is 42.7 years, 40.5 years for males, and 45.1 years for females.