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