I’m 41.
2 with parents (0-13, 13-24)
Rented a house for one year when TheKid was born (with her dad)
Rented an apartment in a fourplex for three years
Moved to the country, rented an apartment for another two years
Came back to the cities, bought a condo for three years
Bought my sister’s house, where I live now, almost seven years ago
Other than my two years in the country, I have never lived more than 5 miles away from my parents.
I’m 52 and I’ve lived in nine locations, seven of which have been in the same town I live in now.
There were two apartments that my parents rented before they bought their home when I was two. Lived there 20+ years, through college. Places #4 through #8 were apartments of my own until I was married. My wife and I bought our house (two streets over from the family homestead) around 12 years ago.
Roughly 25 miles away from here is the greatest distance I’ve been from my hometown.
I lived in the same home from birth to age 17. Between age 17 and 23, I’ve counted a little over 40 different living situations, if you count periods of homelessness as well as addresses. Between age 23 and now (age 42), I have moved to 11 different addresses. 
Seven. I lived in three houses as a child (though only one from age five on), three apartments in Schenectady, and then the house I’ve been living in for 30 years.
Four. One growing up (and my mom still lives there), one for undergrad (I lived in several different dorms, but mail was delivered to PO boxes in the middle of campus), one for just a couple of months right after I moved out here, before I’d found a more permanent place to stay, and then here for the past mumblety-mumble years. Of those, I’d only count the first and the last as “permanent addresses”.
17 in 34 years. I figured the number would be higher than that due to all of the moves associated with college/grad school/postdoc, etc.
How many addresses? I counted about 25, but some of those are in the same city, and I also counted places I lived short term (4-6 months), so it’s a bit inflated. I’m 29.
Not counting 3 years at college.
24 years in the house I was born in.
6 months in first apatrment.
6 montrhs in a triplex when first married.
1 year in duplex after move to San Jose.
3 years in our first house
33 years in our present house.
Lets see that is 6 in 62 years.
Stayed 18 years in the house my parents had since they got married.
Then 6 different places in college (5 dorms, 1 house), 2 different places in grad school, 2 apartments with my husband, and finally this house for about 10 years now, reaching age 40. So that’s 12 if I’m adding right.
15, if you count the summer I did an internship in Seattle. I also did a one-month internship in Little Rock, but never had any mail sent there or anything, so I’m not counting that.
23 different addresses, near as I can figure. I’m in my mid-50’s. Most have been in the western U.S., with a couple stints in Asia and 4 years in the midwest. Except for the midwest and some short overseas jaunts, my wife has never lived more than a few miles from I-5.
Counting only places that I received mail, 39. Longest was nine years, shortest was two months, all over the country. I’ve been in my current house for 2.5 years and, while I thought it might be the last move before my sister and I end up in the Home For Old Ladies, I think there may be one more move in the near (two years-ish) future.
My sister, on the other hand, has been in the same house for more than 30 years. I can hardly imagine roots that deep.
37 years old here. 22 different locations.
3 around Los Angeles, CA area with parents.
6 around Berkeley, CA around for university.
3 in Tokyo, Japan during my first Japan stint.
1 in Vancouver, BC for work.
2 in Seattle, WA for same company as above.
3 in London, England for same company.
1 in Linkoping, Sweden for same company.
3 around Tokyo during my current Japan stint.
I see people adding other details so I thought I would too:
16 cities
6 states
Let’s see:
Born in Fort Frances - 1011 Scott Street
Moved to Vancouver - ? Fraser Street
Moved to Port Moody - 2 on Murray Street, then 2415 Clarke Street
Moved to Surrey - 8361 - 120 A Street
Moved to Ignace, Ontario - 118 Balsam Road
Moved back to Fort Frances - 224 Third Street W., 265 First Street E., 310 Second Street E.
Moved to Bemidji For University - 615 Washington Avenue S. (aka Room 1, The Orbit Motel)
Moved to Saskatoon For a Summer Class in Property Law - 815 Temperance Avenue South (although this may be too short a time: I didn’t move any furniture in, but did receive mail at this address)
Moved to Winnipeg to Go to University - Year 1 lived in my brother’s basement; Year 2 I had an apartment; Year 3 I moved into a townhouse; after graduating Law School, moved into my current address.
So, 15 (or 16) times.
Apparently most of you move a lot more often than I do.
I’m 51, and I think I’ve had 12 addresses.
2 before college
2 during college
4 in 12 years in Washingon, DC
4 in 18 years here in Madison.
I own my home now. I don’t expect to move again until I’m carted off to some kind of asylum.
Hmm. Let me work this out. For the purposes of this question I shall define “address” as “lived in long enough that you could mail a letter to me there”. Not that I could read during my sojourn at a couple of these places.
London
Air bases x 2
Surrey
Hampshire
Houston, TX
Oxfordshire
Uni x 4
Oxfordshire #2
Japan x 2
Hong Kong x 6
Rural Ireland
Dublin x 6
Stamford, CT x 2
Thailand
Oxford x 2
So, 32 addresses. Age 42.
58 years old, have lived in 4* addresses. All within 100 miles of each other.
*Actually 5 – I forgot the house I lived in the first 16 months of my life.
I’m 37 and technically I’ve had five addresses:
I am 39 and there are 27 that I can remember - and I am sure there are more from my childhood because I think my parents hobby was moving! I think 19 of them were before I was 16 years old, and 20 of them are within one city. The longest I spent at one school growing up was just over a year - and my family wasn’t military. I’ve been in the same place now for nearly 10 years though, and I am planning on moving next year.