BLS metro-level wage data places Teaching Assistants, Except Postsecondary pay in McAllen-Edinburg-Mission, TX at a median of $29,520 per year, drawn from the OEWS May 2025 release for this Metropolitan Statistical Area. Compared to the national median of $36,780, McAllen-Edinburg-Mission pays 20% below, which typically tracks with a lower local cost of living or smaller specialized-employer cluster. Approximately 4,030 teaching assistants, except postsecondarys are employed across the McAllen-Edinburg-Mission MSA in SOC 25-9045.

The McAllen-Edinburg-Mission pay distribution spans from $22,150 at the 10th percentile to $38,900 at the 90th — a 1.8× spread that reflects experience tenure, specialization, employer size, and the difference between public-sector, nonprofit, and private-sector compensation inside the metro. The 25th percentile sits at $23,630 and the 75th at $36,160, so half of McAllen-Edinburg-Mission-based teaching assistants, except postsecondarys earn within that middle band.

Metro figures capture where you actually work, not just where you live — which matters for commuters. BLS draws metro boundaries from the OMB MSA definitions, so McAllen-Edinburg-Mission, TX covers the central city plus outlying counties tied to the metro economically. Remember that OEWS wages reflect base pay only: employer-provided health insurance, retirement matches, stock options, signing bonuses, overtime, and tips are excluded and can add 20-40% to real total compensation. Before using this metro median as a negotiation anchor, triangulate against the same occupation's national profile (linked below), its state-wide TX data, and peer-metro comparisons — a median is a starting point, not a ceiling.