The federal wage survey has no occupation for user experience research. This guide uses Web and Digital Interface Designers (15-1255) as the closest match because O*NET's task list for that occupation includes conducting user research to determine design requirements and analyzing user feedback. The occupation's sample titles, though, are mostly design and development roles: UX Developer, UI Developer, Web Designer, Webmaster.
That makes the figures a proxy. They show the market researchers are hired into, not a measured researcher wage. The gap between the 25th and 75th percentile, $73,290 to $158,820, is one of the widest of any occupation in this guide, which is why the page uses percentile bands instead of a single number.
For a specific offer, the city table and the band above are a better guide than the national median.