County abbreviations to be able to convey as much info as possible in the small name field. Please also read our How-to here.
Note that the project administrators will edit information under “Most Distant Ancestors” according to this list, in order to show the most relevant information about where the lines are from.
- Oppland – OPL
- Hedmark – HED
- Østfold – ØFO
- Akershus – AKR
- Oslo – OSL
- Buskerud – BUS
- Vestfold – VFO
- Telemark – TEL
- Agder – AGD
- Aust-Agder – A-AGD
- Vest-Agder – V-AGD
- Rogaland – ROG
- Hordaland – HRD
- Sogn og Fjordane – SFJ
- Møre og Romsdal – MRO
- Trøndelag – TRØ
- Sør-Trøndelag – STR
- Nord-Trøndelag – NTR
- Nordland – NRL
- Troms – TRO
- Finnmark – FNM
Svenska län – Swedish county codes
If you have Swedish ancestry, here are the county codes, normally placed between brackets as (S), (O) etc. Please also join the Sweden DNA project. 
- Blekinge län – K
- Dalarnas län – W
- Gotlands län – I
- Gävleborgs län – X
- Hallands län – N
- Jämtlands län – Z
- Jönköpings län – F
- Kalmar län – H
- Kronobergs län – G
- Norrbottens län – BD
- Skåne län – M
- Stockholms län – AB
- Södermanlands län – D
- Uppsala län – C
- Värmlands län – S
- Västerbottens län – AC
- Västernorrlands län – Y
- Västmanlands län – U
- Västra Götalands län – O
- Örebro län – T
- Östergötlands län – E
Danish counties – Amt
In Danish genealogy we use the pre-1970 Amt list:
- Hjørring
- Thisted
- Ålborg
- Viborg
- Randers
- Ringkøbing
- Ribe
- Århus
- Skanderborg
- Vejle
- Tønder
- Haderslev
- Åbenrå
- Sønderborg
- Odense
- Svendborg
- Holbæk
- Frederiksborg
- Københavns
- Roskilde
- Sorø
- Præstø
- Maribo
- Bornholms Amt
