Since not all clothes are washed at equal intervals, give me a time period for each of these items:
Shoes
Socks
Underwear
Pants/Jeans
Shirts/Sweaters
Jackets
Bedsheets*
*While they’re not clothes, I’m curious as to how long bedsheets get used before getting washed.
Almost never for shoes and jackets, once every week or two for linens, and generally after one use for socks, underwear, and shirts.
Pants, jeans, and sweaters depend upon how dirty I get them but two or three times on average I’d guess.
*Shoes - I’ll wear for a couple months in the summer, longer in winter, between washes.
Socks, Underwear, Pants/Jeans, Shirts - One day. Everything that touches my body gets washed after one use.
Sweaters - Maybe once a season. I wear a shirt under the sweater, rarely wear sweaters, and don’t really know what to do with wool anyway (after I shrunk the last sweater I tried to wash)
Jackets - Depends on the jacket. Some get washed 2-3 times a winter, some (wool again) only get cleaned when I know they’re dirty.
Bedsheets - I don’t keep track. “When they need it” or “when that damn cat knocks over a glass of water again”.
Yep, me too.
Although, work jeans are single use, while non-filthy jeans are washed every second or third wearing.
Shoes - when they start to smell or I walk through mud or something
Socks - one day
Underwear - one day
Pants/Jeans - 2/3 days or when they start to smell or get dirty
Shirts/Sweaters - one day for shirts that actually touch me, 3/4 for sweaters I can put in the dryer. I don’t have room in my house at college to lay sweaters out to dry, so those have to wait until I go home for a weekend or a break (once a month or so).
Jackets - when they smell or get noticeably dirty
Bedsheets - not often enough, considering I have dust allergies - I try to go for once every two weeks or so (about how often I do laundry), but sometimes I forget.
Shoes can be washed?
New socks & underwear for each time I put clothes on, so once a day or twice if I get changed.
Jeans: when I suspect they haven’t been done for a while. Probably four or five days’ use.
Trousers for work: couple of days.
Shirts: every single day, at least, especially when working.
Jackets: Dry-cleanable ones I try to keep aired after taking them off to prolong the cycle. But it’s like with jeans, it’s ‘when they need it’.
Bedsheets: I’m not good here. ‘When I can be bothered’ is the honest answer.
My habits are pretty much exactly the same as GorillaMan’s.
My husband seems to change clothes two or three times a day.
I do three loads of laundry four times a week for the two of us. Everything gets washed everytime.
I’ve never washed my own shoes, his get washed once a month.
You need to be careful saying things like that 
Shoes – (sneakers & crocs) when I look at them & think “eww.” Real shoes get wiped off and aired out between wearings
Socks - one wearing (and changing shoes requires clean socks)
Underwear - one wearing (changing clothes requires clean undies)
Pants/Jeans - one wearing. Two if I was unusually mess-free the first time.
Shirts - one wearing.
Sweaters - two wearings, unless I was unusually messy the first time. Dry-clean Only sweater – I have only one, because I’m messy, and almost never wear the damn thing even though it’s gorgeous, so maybe once a year.
Dress Jackets (aka Blazers or suit jackets) – when I have a coupon for the dry cleaner I like (every other month or so)
Outerwear – end of season.
Bedsheets - weekly at least. Depends on cat hork, air temp, surprise periods, cold & flu and allergy season, etc. Pillows, and comforter are cleaned quarterly. I’d have it done monthly, if I won the lottery. 
Socks, boxers, and shirts: Wear once, then into the laundry basket
Pants: I’ll wear a pair of jeans/cargo pants 3-4 days before changing, unless I spill something on them.
Jackets: Wash when they need it
Sheets: See Jackets
Shoes: Say what?
Shoes: I try to go a month between shines for the ones I wear often.
Socks & underwear: wear once, then wash. Anybody who does otherwise, absent financial hardship or no access to a laundry, is unwell.
Shirts: depends on whether they get anythng on them, but no more than 3 wears between washings.
Bedsheets: once a week.
Knit sweaters, any sort of jackets: many variables, impossible to give a rule other than “when it needs it.”
Shoes? I’ve done it, but not enough to really mention.
Socks, undershirts and drawers after a single use.
Dress pants get one wearing, jeans can get 4 or 5 wears before they smell.
Jackets get pressed far more often than they would get washed. Once a season unless it gets something on it.
Bedsheets? Depends on how often I’ve been having sex on them.
Shoes - if they’re sneakers and get really stinky or immersed in water or something, then I’ll wash them, but that’s very rare
Socks - after one wearing
Underwear - underwear after one wearing, bras can have several wearings unless it’s wicked hot. Except for sports bras, these are handwashed/hung to dry - I’d guess I wash them every 2-3 wearings.
Pants/Jeans - probably every 2-3 weariungs
Shirts/Sweaters - Depends. Shirts probably after each wearing - occasional exceptions for fancy stuff that’s dry-clean only or the like. Sweaters - as needed, and that’s hard to define.
Jackets - as needed. That’s more often for denim jackets and the like, maybe once a season for the wool coat.
Bedsheets - once a week, especially for the pillowcases, but everything gets done then. It’s easier to wash it all at once and my face breaks out much less if it’s once a week.
Shoes: I don’t wash gym shoes; they tend to wear out before it becomes necessary. Nice shoes, of course, can’t be washed; shine is as-needed.
Socks: Daily. If I change clothes during the day, I may change socks depending on the circumstances. (e.g., changing from jeans with white socks to dress slacks with dressier socks)
Underwear: Daily. Changing pants doesn’t entail changing underwear, though taking a shower usually does.
Jeans: Two or three wearings, probably. For dress pants, it’s going to depend on when they need to be pressed more than when they need to be washed.
Shirts/Sweaters: T-shirts and polos or the like are single-wear items. Dress shirts are too, as much because they need to be pressed as because they’re dirty. (I do sweat fairly heavily under the arms, though, and even wearing a t-shirt under my dress shirts doesn’t keep it completely dry, so I’d probably wash them even if I could figure out how to not wrinkle them.) Sweaters are strictly on an as-needed basis, which can be a pretty long time if I’m good. If it occurs to me that it’s been a very long time, I’ll probably wash them even if they don’t seem to ‘need’ it.
Jackets: As needed, but rarely. My olive-drab field jacket hasn’t been washed in several years, I’m fairly sure.
Bedsheets: I try to do these once a week, but I’m not always diligent about it. It doesn’t help that I’ve only got one set of decent sheets–the other sheets are all pill-ey, so I don’t care to sleep on them. If I had more than one set of smooth, pill-free sheets, I’d probably wash them weekly.
I don’t wash shoes, ever. Jackets get washed when they’re filthy/muddy/soaked.
Sheets and bed linens are washed twice a week, so they smell nice.
Everything else is washed after every use. Yes, I do 4-5 loads of laundry a day. We are a messy family.
Shoes- Wash shoes? I guess I don’t buy shoes that can be washed except for maybe my All Stars…but when they are icky I can just buy new ones
Socks- I wash socks when they are new before the first wear and after every wear. Re-wearing dirty socks - ick!
Underwear- I wash underwear when they are new before the first wear and after every wear. Again, wearing dirty underwear? :eek:
Pants/Jeans- This really depends. In the summer when it’s hotter than hell, pants get washed after every wear, unless I only have them on for a little bit and not being all sweaty. In the winter, most pants, jeans especially, get worn 2 - 3 times before being washed. It all just depends on what I have been doing. If I wore them to clean out the garage- washed after that wear.
Shirts/Sweaters- Most shirts get washed after every wear. With sweaters it really depends. For sweaters I can wash and dry- usually wash every time. Ones I have to lay flat to dry- which is a pain since I have a really small house- I will wear them a couple of times before I wash them.
Jackets- I wash washable zip-up sweatshirts every couple of weeks, nicer coats go for cleaning at the end of the season unless they really need it. I hate paying for dry cleaning.
Bedsheets- I try to change/launder bedsheets every week at the most every 2 weeks. I wash the duvet cover once a month.
Shoes- I wash my canvas tennis shoes whenever they begin to smell or look dingy
Socks- After each wear (except for the warm socks I wear to bed when its cold)
Underwear- After each wear
Pants/Jeans - Work pants, after each wear. Jeans will get worn 3 times before washing
Shirts/Sweaters - Unless they are ‘bedclothes’, after each wear
Jackets - Rarely
Bedsheets* - once a month
Shoes – Uh. Never? I don’t wear shoes that can be washed.
Socks – After one wearing
Underwear – After one wearing
Pants – after one wearing
Jeans – when they look or smell dirty or when I happen to have a load of blues to go in the wash, whichever comes first
Shirts – after one wearing
Sweaters (purchased) – after one wearing
Sweaters (made) – when they look or smell dirty
Jackets (suit) – after a dozen or so wearings, I get them dry-cleaned
Jackets (outerwear) – I’ll get them dry cleaned if they absolutely need it but I can’t remember the last time that was the case
Bedsheets* – when I notice they smell. Which is, I’m pretty sure, well after they actually start smelling.
Towels – about one week, however many showers that might entail, or until I take multiple showers in a single day and my towel from the morning is still wet in the afternoon and I have to get a new one.
(I added the last one to the list, because I’m curious about it. My ex-roommate used multiple towels and never more than once so he did absolutely masses of towels every week when we went to the laundromat.)
Shoes
I wash my Tevas in the shower probably weekly and throw them in the wash once in a while (every 1-2 months maybe). My Chucks get thrown in the washing machine about once a month, and I polish all my leather shoes monthly or after abuse.
Socks
One use.
Underwear
One use.
Pants/Jeans
Depends on how dirty they get. I often get 2 uses out of pants.
*
Shirts/Sweaters*
One use, generally.
Jackets
I wash my hoodies weekly; I can’t recall the last time I took my pea coat in to the cleaners, although I steamed it last month. I clean my leather coats with leather cleaner once in a while, but I wash the liner to my motorcycle jacket about once a month, twice for my husband’s (he rides much more than I do).
Bedsheets*
I change them weekly; the duvet cover monthly or as needed.
Towels/Robes
I wash them once a week; washcloths get one use.