Is tonai (都内）only used for the Tokyo metropolitan area specifically?


I was having a chat conversation and used the word to comment on a profile.
The person chatted that there are different words used depending on where the
person is from, so if a person is from the Sendai metropolitan area, tonai is
not used. Please advise.




> Is tonai (都内）only used for the Tokyo metropolitan area specifically?

Yes. We have only one [都]{と} in Japan: [東京都]{とうきょうと}.  
[都内]{とない} _lit._ within the prefecture of Tokyo ⇒ in/within Tokyo

Compare:  
[道内]{どうない} -- in/within Hokkaido (北海道)  
[府内]{ふない} -- in/within Osaka or Kyoto (We have two 府's: 大阪府 and 京都府)  
[県内]{けんない} -- in/within the prefecture (other than the four above)

> if a person is from the Sendai metropolitan area, tonai is not used.

No, 都内 isn't used to refer to 仙台 or 宮城.  
Sendai ([仙台]{せんだい}) is in Miyagi Prefecture ([宮城県]{みやぎけん}). You'd say 宮城県内 to
mean "within Miyagi Prefecture" and 仙台市内 to mean "within Sendai City".

[市内]{しない} -- in/within the [市]{し}/city  
[町内]{ちょうない} -- in/within the [町]{まち/ちょう}/town  
[村内]{そんない} -- in/within the [村]{むら}/village




> Is tonai (都内）only used for the Tokyo metropolitan area specifically?

Yes. We have only one [都]{と} in Japan: [東京都]{とうきょうと}.  
[都内]{とない} _lit._ within the prefecture of Tokyo ⇒ in/within Tokyo

Compare:  
[道内]{どうない} -- in/within Hokkaido (北海道)  
[府内]{ふない} -- in/within Osaka or Kyoto (We have two 府's: 大阪府 and 京都府)  
[県内]{けんない} -- in/within the prefecture (other than the four above)

> if a person is from the Sendai metropolitan area, tonai is not used.

No, 都内 isn't used to refer to 仙台 or 宮城.  
Sendai ([仙台]{せんだい}) is in Miyagi Prefecture ([宮城県]{みやぎけん}). You'd say 宮城県内 to
mean "within Miyagi Prefecture" and 仙台市内 to mean "within Sendai City".

[市内]{しない} -- in/within the [市]{し}/city  
[町内]{ちょうない} -- in/within the [町]{まち/ちょう}/town  
[村内]{そんない} -- in/within the [村]{むら}/village

