Whether hooking up or waitressing in Brooklyn, driving a cab in Chicago, or parsing dog-park etiquette in Portland, a diverse collection of smart and/or grungy hipsters is living large on TV this season.

Among the worthwhile Bohemian sitcoms (Bo-coms?) vying for attention:

“I Just Want My

Pants Back,” MTV

An aspiring actor and his friends fumble in love and work but succeed in being engaging, smart-mouthed characters. Based on the David Rosen book of the same (wonderful) title, “Pants Back” is about hanging out, trading clever turns of phrase, citing modern cultural references and seeking a way out of 20-something ennui. Peter Vack is irresistible as Jason, whose trou disappeared with an intriguing new sex partner (Kelli Barrett) in the pilot.

Since MTV veered from music videos, the network is finding success in scripted efforts. This one isn’t quite up to “Awkward,” the more soulful, female-centric half-hour that debuted last year. But it’s fun, a step above the unscripted “Jersey Shore” piffle it follows.

“Happy Endings,” ABC

May this ensemble of friends take years to settle into meaningful lives and loves. The cast is terrific, from Casey Wilson’s wry, bitter and hilarious Penny, to Damon Wayans Jr.’s physical comedic grace as Brad (catch his musical visit to the dentist from last week’s episode). Even “24’s” Elisha Cuthbert has found her calling here — not in drama.

Some great guest stars — Megan Mullally, Michael McKean, Ken Merino, James Wolk — have added charm.

What began as a one-joke ABC comedy about a guy ditched at the altar has evolved into an ongoing chronicle of friends looking for love and cocktailing.

“2 Broke Girls,” CBS

The amazingly raunchy (for CBS) sitcom that specializes in racial stereotyping and sexual innuendo also boasts competent and likable actors in the title roles. Kat Dennings and Beth Behrs are terrific sparring partners as Max and Caroline, the socioeconomic opposites thrown together because of Caroline’s economic misfortunes.

The humor would be better if it weren’t so consistently drawn from forced naughty puns. And the scenes in the diner, where fun at the expense of foreigners is the focus, could be axed without losing the heart of the show. But Max speaks for a cynical generation that knows too well the dark side of the recession.

“Portlandia,” IFC

This half-hour gently knocks the town at the center of the universe for the self-consciously hip and eco-friendly. The IFC sketch series starring Fred Armisen and Carrie Brownstein offers biting observations on a proudly evolved generation, a breed of tree-hugging, underemployed American peculiar to the Pacific Northwest but with a slacker vibe detectable in coffehouses nationally.