Oldest postal codes

The 20 postal code areas in Helsinki with the highest average age, and the 20 with the lowest, out of 291 with a published figure.

	Area	Municipality	Postal code	Average age
1	Lohja	Helsinki	08450	55.0
2	Leppäkorpi	Helsinki	09930	53.0
3	Millola	Helsinki	09520	53.0
4	Lohja	Helsinki	08100	52.0
5	Upinniemi	Helsinki	02470	52.0
6	Ikkala	Helsinki	03810	51.0
7	Hyvinkää	Helsinki	05510	50.0
8	Hyvinkää	Helsinki	05800	50.0
9	Hautjärvi	Helsinki	04840	49.0
10	Helsinki	Helsinki	00290	49.0
11	Huhmari	Helsinki	03150	49.0
12	Hyönölä	Helsinki	03870	49.0
13	Pusula	Helsinki	03850	49.0
14	Tervalampi	Helsinki	03220	49.0
15	Espoo	Helsinki	02380	48.0
16	Espoo	Helsinki	02980	48.0
17	Hyvinkää	Helsinki	05900	48.0
18	Karjalohja	Helsinki	09120	48.0
19	Karkkila	Helsinki	03600	48.0
20	Kärrby	Helsinki	06880	48.0

Youngest postal codes

	Area	Municipality	Postal code	Average age
1	Espoo	Helsinki	02150	27.0
2	Helsinki	Helsinki	00860	32.0
3	Sundsberg	Helsinki	02450	32.0
4	Vantaa	Helsinki	01530	32.0
5	Espoo	Helsinki	02250	33.0
6	Vantaa	Helsinki	01700	33.0
7	Espoo	Helsinki	02680	34.0
8	Hyvinkää	Helsinki	05440	34.0
9	Espoo	Helsinki	02610	35.0
10	Espoo	Helsinki	02780	35.0
11	Helsinki	Helsinki	00220	35.0
12	Mäntsälä	Helsinki	04620	35.0
13	Espoo	Helsinki	02270	36.0
14	Espoo	Helsinki	02600	36.0
15	Espoo	Helsinki	02630	36.0
16	Helsinki	Helsinki	00580	36.0
17	Helsinki	Helsinki	00790	36.0
18	Vantaa	Helsinki	01370	36.0
19	Vantaa	Helsinki	01510	36.0
20	Vantaa	Helsinki	01520	36.0

Oldest postal codes — All of Finland

Places with fewer than 100 residents are excluded: a figure drawn from a handful of people carries more uncertainty than the differences being ranked.