Evolution de la population par région (au 1er juillet)
			2005	2006	2007	2008
	Ensemble	Ensemble	12,628,241	13,044,973	13,475,457	14,296,816
		Hommes	6,298,641	6,506,496	6,721,211	7,132,170
		Femmes	6,329,600	6,538,477	6,754,247	7,164,646
	Agadez	Ensemble	367,236	379,355	391,873	437,210
		Hommes	185,295	191,409	197,726	220,601
		Femmes	181,941	187,945	194,147	216,609
	Diffa	Ensemble	395,730	408,789	422,279	446,651
		Hommes	202,788	209,480	216,392	228,882
		Femmes	192,942	199,309	205,886	217,769
	Dosso	Ensemble	1,719,341	1,776,079	1,834,690	1,921,202
		Hommes	850,157	878,213	907,194	949,971
		Femmes	869,184	897,867	927,496	971,231
	Maradi	Ensemble	2,552,696	2,636,935	2,723,954	2,865,219
		Hommes	1,260,919	1,302,530	1,345,513	1,415,292
		Femmes	1,291,777	1,334,405	1,378,441	1,449,927
	Niamey	Ensemble	808,313	834,987	862,542	1,033,295
		Hommes	409,322	422,830	436,783	523,251
		Femmes	398,991	412,157	425,758	510,044
	Tahoua	Ensemble	2,252,391	2,326,720	2,403,501	2,524,514
		Hommes	1,125,938	1,163,094	1,201,476	1,261,968
		Femmes	1,126,453	1,163,626	1,202,025	1,262,546
	Tillabéri	Ensemble	2,157,380	2,228,574	2,302,117	2,396,411
		Hommes	1,068,640	1,103,905	1,140,334	1,187,042
		Femmes	1,088,740	1,124,669	1,161,783	1,209,369
	Zinder	Ensemble	2,375,154	2,453,534	2,534,501	2,672,314
		Hommes	1,195,582	1,235,036	1,275,793	1,345,163
		Femmes	1,179,572	1,218,498	1,258,709	1,327,151
	Source :  Institut National de la Statistique