New vs. returning

Splits users into 'new' (first visit in the lookback window) or 'returning'.

Ask it in plain English

"How does engagement differ between new and returning users?"

Field details

TypeDimension
GA4 API namenewVsReturning

Good to know

"New" is relative to GA4's identifier lookback, not a lifetime memory of the visitor - someone who last showed up several months ago and comes back can be recorded as new again, since GA4 isn't tracking "has this human ever visited," only "has this identifier been seen recently."

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Sources

  • Google Analytics Data API - dimensions & metrics reference (official Google documentation)