Direct answer: Mayors are elected for four-year terms in most U.S. cities, but there is a wide variety across jurisdictions. Some cities offer two-year terms for mayors, while others use six-year terms. Term limits (how many terms a mayor can serve) also vary widely: many cities cap mayors at two consecutive terms (eight years total if consecutive), but several places have no term limits, and a few use longer limits or different rules. To know the exact term length and any term-limit height for a specific city, check that city’s charter or municipal code. Key nuances:

• Common term lengths: four years is the standard in many large and mid-sized cities; two-year terms exist in some smaller or older systems.
• Term limits: two consecutive terms (often eight years total) is a frequent ceiling, but not universal; some cities permit unlimited terms, others restrict to one term, and a few allow non-consecutive terms.
• Variation by state and city: even within the same state, different municipalities can have different structures for mayoral terms and limits.

If you want, specify a particular city or state, and provide that city’s charter or official sources, and the exact current term length and limits can be confirmed.