I can’t be bothered putting the numbers up, so I’ll try to put up rough percentages:
Country: 20%
Heavy Metal: 5%
Black Metal: 5%
Punk: 20%
Alternative: 20%
Velvet Underground and related: 10%
misc (comedy, rock, jazz, classical, unclassifiable): 20%
I put HM and BM as two separate categories, because I went through two distinct phases for those two styles.
Jazz, blues - about 15
Reggae, roots, dub - about 10
Easy listening, Brazilian - about 5
Classical - about 25
World - about 10
Postrock/Experimental rock - about 50
Dance/Techno/D&B - about 15
Drifting/Ambient/Trip-hop - about 10-15
Alternative guitar rock - about 25
World rock/dance and bhangra - about 5
Experimental compilations that came free with The Wire - about 10
I didn’t count, so it could be more.
My SO’s collection breaks down like this:
Beatles and related - about 30
Byrds and related - about 30
Crosby Stills and Nash - about 20
Beach Boys and related - about 30
Rock and Sixties about 100
Modern Pop about 25
Alternative rock about 15
About 150. Almost all classic rock. 1 Peruvian music (really cool). Another is white noise).
But I haven’t touched them in years. All the music I want is on my computer now. I like a random playlist so I don’t know what’s next.
Around 100 Jazz
Bout 65 Hip hop
Around 250 electronica/ Dance, from jazzy abstract noodlings by obscure Europeans to seriously hard drum ‘n’ bass
Perhaps 250 old school rock/indie/reggae/dub/funk/newer rock/pop
Around 20 classical.
A bunch… that’s all I could tell ya. I couldn’t even begin to fathom a guess.
The best I can give you is that I have 68.4 gigs of Mp3s.
I have none.
I have about 625 titles. If you factor in discs in box sets individually, it would be about 700. I still have over 400 LPs and 500+ singles. I did break down recently and weeded out any album replaced by a CD unless it was collectable. I ended up donating about 60 albums. I’ll go through the singles this weekend.
I have just over 1000, but I only bought about 250 of them. 
I have about 8,000 discs. Of that, 7950 are Grateful Dead shows, the rest is mixed 70’s rock like Zeppelin, Black Sabbath, Zappa and The Beatles. Of course the Dead discs only cost about .50 piece, so it’s not like I have $80,000 invested in tunes
Got to be getting close to 500 CDs now.
About 2/3 are rock music of various kinds
The rest is a mix of jazz/country/classical/soul/world/soundtracks and a few old comedy albums (Richard Pryor, Monty Python, and George Carlin).
30 - King Crimson/Robert Fripp
18 - Frank Zappa
15 - Miles Davis
10 - The Kinks
and none by the Grateful Dead…ever.
I have about 500. About 200 are cast recordings, the rest being selection CDS from theatre people, plus good sections on ABBA (and pre- and post-ABBA ABBA), and Julian Lloyd Webber. All taking over my two room apartment.
A lot of them are imports, cost anywhere from $30 to $100! Well worth the investment, because they go out of print quickly and the resale value becomes extraordinary.
Approx 250 CDs, I’m not gonna count them all but I can give percentages.
punk 20%
electronica/loungecore/post-rock 40%
rap/hip-hop 25%
pop 5%
new-wave/goth 10%
heavy metal 00%
I feel so inadequate - I have about 60. I’m a latecomer to CDs though - I have a rake of tapes and a good bit of vinyl too.
Jazz, blues, R&B, classic rock, classic metal and British pop are well represented.
More than 250 but less than 300. I don’t know the exact number because I haven’t updated the inventory on excel since last fall.
I have a dozen or so soundtracks
5 or 6 “various artists” comps
5 christmas
1 country
and the rest are in the alternative/rock spectrum, 99% of which are from the mid-90’s or later.
I’ve only got about a 100 CD’s.
Came as a bit of a shock to me when I got married - leechboy has about 1000 CDs which he keeps in his bedroom draws, explained why he keeps his clothes on the floor thought. 
I was planning to catalogue them for insurance purposes (that and the video / DVD collection) just can’t be bothered trying to set up a database for it though so thats another job on the to-do list.
At least you have your priorities straight:D.
It should also be noted that CDs here in Denmark cost around USD 20 - makes it kinda expensive to build up a large collection.
But ofcouse thats nothing compared to our car prices - the 180% import tax does drive the price up a bit… 
Between my husband and myself, we have about 750, all commercially produced.
Our collection is mainly trad ska, punk, and “alternative” with a smattering of classical, jazz, celtic and 60’s stuff.
We also have tons of mp3s, but that’s really because it’s much easier to play a song off the computer than search through our collection.
I am astounded. I have perhaps 20, at least 10 of which I don’t like.
Of course, I do have books in the kinds of numbers you’re talking about, so maybe it’s all in what’s important to you.
I think, though, that whether you have 2 CDs or 2000, the answer to this question is always the same:
“Not enough.”