Postage (USPS)
USPS first-class single-piece 1oz stamp rate. Carved out of the prior misc_other catch-all under the v1.7 no-fallback doctrine; cash contributions and miscellaneous residual exited the basket-relevant denominator at v1.0.9.
Sources
Precedence ladder for postage (usps). Lower precedence wins where multiple sources cover the same period. The engine walks the ladder per period with chain-link rescale at source transitions.
| Precedence | Source | Series ID | Cadence | Geography |
|---|---|---|---|---|
| 0 | usps_stamp USPS first-class 1oz stamp, monthly (last-day-of-month rate) |
usps_first_class_stamp_1oz | — | national |
Weight across archetypes
How postage (usps) is weighted in each of the 10 published archetypes. Sorted by weight, highest first. National Average is the headline citation surface.
| Archetype | Weight | Action |
|---|---|---|
| Retiree | 0.2099% | View archetype → |
| Income — Highest Quintile | 0.1559% | View archetype → |
| Homeowner | 0.1287% | View archetype → |
| Income — Second Quintile | 0.1249% | View archetype → |
| Income — Fourth Quintile | 0.1132% | View archetype → |
| National Average | 0.1123% | View archetype → |
| Income — Middle Quintile | 0.1073% | View archetype → |
| Working Parent | 0.0876% | View archetype → |
| Renter | 0.0732% | View archetype → |
| Income — Lowest Quintile | 0.0649% | View archetype → |
Substitution history
Substitution log entries that touched this stratum. Each entry
bumps the basket version and is reproducible from observations
tagged with their basket_version.
No substitution log entries reference this stratum directly.
Methodology
See the basket page for all 20 strata and the per-stratum source map. The methodology page covers the load-bearing pillars including the rules around source-precedence ladders, chain-link splicing at source transitions, and the no-fabricated-data invariant.