Okay, here’s a more refined ver of the Ontario regions proposal. Standardizing all super-regions to have a -on suffix, plus all subregions are three letter codes.
gtha-on # greater toronto & hamilton area (1-5, 10, 12, 6, 8)
gta # greater toronto area (1-5)
tor # toronto (1)
dur # durham (2)
htn # halton (3)
pel # peel (4)
yrk # york (5)
ham # hamilton (10)
nia # niagara (12)
hdn # haldimand-norfolk (8)
bra # brant (6)
ktw-on # kitchener-waterloo (7, 17-18, 38)
duf # dufferin (7)
wat # waterloo (17)
per # perth (38)
wel # wellington (18)
shur-on # south lake huron (29, 32-33)
hur # huron (33)
bru # bruce (29)
gry # grey (32)
lsim-on # lake simcoe (11, 15-16) - todo, better name for this ?
sim # simcoe (15)
kaw # kawartha lakes (16)
mus # muskoka (11)
hlb # haliburton (9)
nw-on # northwest ontario (47-49)
ken # kenora (47)
rrv # rainy river (48)
tby # thunder bay (49)
ne-on # northeast ontario (39-46)
aga # algoma (39)
coc # cochrane (40)
mnt # manitoulin (41)
nip # nipissing (42)
psd # parry sound (43)
gsu # greater sudbury (44) TODO: region containing 44 and 45? this bothers me
sud # sudbury (45)
tim # timiskaming (46)
se-on # southeast-ontario (20, 21, 23-24, 26)
pec # prince-edward county (26)
lnx # lennox & addington (24)
frt # frontenac (20)
has # hastings (21)
nth # northumberland (13)
ptb # peterborough (14)
alg-on # algonquin area (wip name)
ren # renfrew (27)
lan # lanark (22)
ott # ottawa (19)
psr # prescott & russel (25)
sdg # stormont, dundas & glengarry (28)
ldg # leeds & grenville (23)
sw-on # southwest ontario
esx # essex (31)
chk # chatham-kent (34)
elg # elgin (30)vdflo
lmb # lambton (35)
msx # middlesex (36)
oxf # oxford (37)