Crossword Genius

One town division up on the map? (9)

Ross

I believe the answer is:

northward

I'm a little stuck... Click here to teach me more about this clue!

'one town division up on the map?' is the definition.
I can't tell whether this definition defines the answer.

'one town division up on' is the wordplay.
'one town division' becomes 'ward' (I can't explain this - if you can you should give a lot more credence to this answer).
'up' becomes 'north' (I've seen this in another clue).
'on' means one lot of letters go next to another.
'ward' put after 'north' is 'NORTHWARD'.

Can you help me to learn more?

(Other definitions for northward that I've seen before include "In the direction of Greenland" , "from London to York, say" , "In the direction of Belfast, say" , "In the direction of Belfast for instance" , "In the direction of Ulster, say" .)

I've seen this clue in the Sydney Morning Herald.
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