Craigslist Character Limit: 70 for the Title, and Why Shorter Wins

Craigslist doesn't publish an official character limit for its posting title anywhere in its own help pages — a search of the site's documentation turns up nothing. What exists instead is remarkably consistent third-party observation: recruiting tools, landlord guides, and small-business advice sites independently converge on the same number, 70 characters, based on what the posting form actually allows when tested directly.

Why This One Isn't Officially Documented

Craigslist has always run on a famously bare-bones, largely undocumented interface — the platform doesn't publish detailed technical specifications for most of its posting fields the way larger platforms do. That makes the 70-character figure here different in kind from a number confirmed on an official help page: it's a consistently observed practical limit, not a documented one, closer in spirit to the honest uncertainty around Signal's message length than to a platform with clear developer documentation.

What 25 Million Views Actually Showed

A study by rental-listing platform RentLinx, analyzing 25 million views across 100,000 Craigslist apartment and housing posts, found that most property managers write long titles, using most or all of the available character space to pack in details — but shorter titles consistently attracted more clicks in the same dataset. The gap between common practice and what actually performs better is the real finding here: most posters are working against the data without realizing it.

A title stuffed with every detail a listing has to offer reads, to someone scrolling a results page, as noise rather than information — the eye skips past a wall of text looking for something scannable. A short title trades completeness for a chance to actually be read in the half-second before a reader moves to the next listing.

Where Craigslist Auto-Fills for You

For certain categories, Craigslist automatically prepends details like rent price, bedroom count, and square footage to the title before a poster's own text even begins — meaning the 70-character budget for user-written text is smaller in practice than the raw number suggests, since some of that space is already spoken for by auto-generated fields. Writing toward a shorter target than the full 70 characters accounts for this overhead without needing to calculate the exact auto-filled prefix length each time.

The Search Limit Nobody Expects

A separate, community-reported limit exists on Craigslist's own site search — user reports describe query strings longer than roughly 179 characters returning a 404 error rather than being truncated or ignored. This is a genuinely obscure limit, unrelated to posting a listing, but worth knowing for anyone building an automated search or scraping tool against the platform, since a query built without accounting for it fails outright rather than degrading gracefully.

Checking a Title Before Posting

Given that the practical evidence favors shorter titles even though the platform allows up to roughly 70 characters, checking a draft title's exact length — and aiming meaningfully under the ceiling rather than toward it — matches what the RentLinx data actually supports, not just what the form technically permits. A character counter makes checking that count immediate before submitting a post.

---

Craigslist's 70-character title limit isn't something the platform documents itself — it's a consistently observed practical ceiling, confirmed the same way across independent sources testing the posting form directly. The more useful finding sits alongside it: a real, large-scale study shows shorter titles outperform longer ones on clicks, even though most posters write toward the maximum rather than away from it.