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Which Stack Exchange site has the longest name? Does Area 51 have a limit on proposal names? I need to know this for my userscript.

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Try this. – Nikita Rybak Feb 27 '11 at 22:30
Do you need this because of a userscript you're writing, or something? – Pops Mar 3 '11 at 15:10
@PopularDemand - Yes, I needed it for the minimalist userscript. – Moshe Mar 3 '11 at 18:13
up vote 11 down vote accepted

The longest SE site names currently are:

Code Golf and Programming Puzzles (33)
Audio Recording and Production    (30)  
Theoretical Computer Science      (28)  
Science Fiction and Fantasy       (27)  
English Language and Usage        (26)  
Personal Finance and Money        (26)

The longest SE site URLs are: (43)   (41)   (41)    (40)
...      (37) Longest full SE site
...          (34) Longest chat site
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This is the info I'm looking for. I dare someone to make a "Supercalfragilisticexpialidocious" proposal just to spite me. – Moshe Feb 27 '11 at 23:10

Area 51 does have a limit on the topic field, which you can see by typing in the form:

Create proposal, topic field

The API does not put hard limits on fields, and they are subject to change, however the documentation does list a suggested size. For the sites, you can see this by going to

So, even between the two, the limits are different, and those numbers aren't carved in stone.

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Thanks for the input. +1 – Moshe Feb 27 '11 at 23:11

For forwards-compatibilities sake, here's a way to find out in Python:

compressed = urllib.urlopen('')
uncompressed = gzip.GzipFile(fileobj = StringIO.StringIO(
data = json.load(uncompressed)
print max([site['name'] for site in data['api_sites'] if site['state'] == 'normal'], key = lambda x: len(x))

You can let state be open_beta and closed_beta if you want to count those

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