Oldest postal codes

The 20 postal code areas in Lahti with the highest average age, and the 20 with the lowest, out of 93 with a published figure.

	Area	Municipality	Postal code	Average age
1	Sysmä	Lahti	19700	59.0
2	Padasjoki	Lahti	17500	58.0
3	Hartola	Lahti	19600	57.0
4	Heinola	Lahti	18100	56.0
5	Koitti	Lahti	19540	56.0
6	Auttoinen	Lahti	17610	55.0
7	Kalkkinen	Lahti	17240	55.0
8	Pohela	Lahti	19620	55.0
9	Vesijako	Lahti	17630	55.0
10	Heinola	Lahti	18120	54.0
11	Heinola	Lahti	18130	53.0
12	Hietana	Lahti	16260	53.0
13	Liikola	Lahti	19740	53.0
14	Villikkala	Lahti	16270	53.0
15	Arrakoski	Lahti	17530	52.0
16	Artjärvi	Lahti	16200	52.0
17	Artjärvi Kk	Lahti	16230	52.0
18	Asikkala	Lahti	17320	52.0
19	Heinola Kk	Lahti	18300	52.0
20	Hollola	Lahti	15870	52.0

Youngest postal codes

	Area	Municipality	Postal code	Average age
1	Lahti	Lahti	15160	32.0
2	Lahti	Lahti	15680	37.0
3	Pennala	Lahti	16320	37.0
4	Kukkila	Lahti	15270	38.0
5	Vierumäki	Lahti	19120	39.0
6	Lahti	Lahti	15320	40.0
7	Virenoja	Lahti	16310	40.0
8	Lahti	Lahti	15820	41.0
9	Lahti	Lahti	15230	42.0
10	Lahti	Lahti	15340	42.0
11	Lahti	Lahti	15810	42.0
12	Tennilä	Lahti	16630	42.0
13	Vesivehmaa	Lahti	17130	42.0
14	Villähde	Lahti	15540	42.0
15	Herrala	Lahti	16500	43.0
16	Lahti	Lahti	15200	43.0
17	Lahti	Lahti	15300	43.0
18	Lahti	Lahti	15610	43.0
19	Lahti	Lahti	15840	43.0
20	Hollola Kk	Lahti	16710	44.0

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.