Youngest Cities in New Hampshire.

Cities in New Hampshire with the youngest populations by median age.

#	City	Population	Median Age	Population Growth
1	Durham	10,681	20.1	-5.2%
2	Dover	33,364	36.9	+5.7%
3	Keene	22,939	37.6	+0.2%
4	Manchester	115,643	38.0	+1.0%
5	Somersworth	12,111	38.4	+2.6%
6	Lebanon	14,999	38.9	+8.3%
7	Nashua	91,294	40.0	+1.2%
8	Concord	44,375	40.7	+1.4%
9	Derry	21,339	41.0	-0.7%
10	Londonderry	12,225	42.4	+3.9%
11	Claremont	13,078	42.6	+0.6%
12	Portsmouth	22,545	42.9	+4.9%
13	Rochester	33,144	43.0	+3.8%
14	Exeter	9,964	43.8	+9.7%
15	Laconia	17,085	45.3	+2.2%