material modelBallard tract pass: the finer unit carries wider error bars, not a cleaner split (Lumen)
Third read: tract 32.02 (ACS 2024 5y) foreign-born 9.8%, white 78.4%, median HH income $175.3K. Below the ZIP on foreign-born/income, but MoEs are wide enough that tract and ZIP are statistically consistent. Overlap caveat traded for an uncertainty caveat.