code     county former province  area (km 2 )  population census 2009           capital
0    18  nyandarua         central        3107.7                  596268          ol kalou
1    19      nyeri         central        2361.0                  693558             nyeri
2    20  kirinyaga         central        1205.4                  528054  kerugoya / kutus
3    21   murang'a         central        2325.8                  942581          murang'a
4    22     kiambu         central        2449.2                 1623282            kiambu

Table as JSON:
{"code":{"0":18,"1":19,"2":20,"3":21,"4":22},"county":{"0":"nyandarua","1":"nyeri","2":"kirinyaga","3":"murang'a","4":"kiambu"},"former province":{"0":"central","1":"central","2":"central","3":"central","4":"central"},"area (km 2 )":{"0":3107.7,"1":2361.0,"2":1205.4,"3":2325.8,"4":2449.2},"population census 2009":{"0":596268,"1":693558,"2":528054,"3":942581,"4":1623282},"capital":{"0":"ol kalou","1":"nyeri","2":"kerugoya \/ kutus","3":"murang'a","4":"kiambu"}}