The Three Costs in an EDDM Mailing
An EDDM mailing has three cost components that stack per piece: printing the mailpiece itself, shipping the printed pieces to the post office (or a print vendor's EDDM-bundled shipping), and USPS postage. Multiplying the sum by household count gives the total campaign cost.
Formula
Total Cost = Households × Cost Per Household
Postage is the one figure worth double-checking against USPS's current published rate before finalizing a budget, since it is set by USPS and changes periodically — printing and shipping costs are set by whichever vendor is producing and delivering the pieces, and vary by quote.
Converting Routes to Households
EDDM is sold by mail carrier route, not by an arbitrary household count, and route size varies considerably by area.
Urban and suburban routes run smaller
Dense areas commonly see routes of roughly 200 to 500 households, since carriers cover less geographic ground per route where addresses are close together.
Rural routes vary more widely
A single rural route can cover a larger geographic area with fewer or more addresses depending on how development is distributed along the carrier's path.
The USPS route mapping tool gives exact counts
Before finalizing a budget, USPS's own EDDM route selection tool shows the precise household count for each specific route being considered — a more reliable number than any area-wide average.
Volume Limits to Plan Around
EDDM Retail requires a minimum of 200 mailpieces per submission and allows up to 5,000 pieces per day per ZIP code at the retail counter rate. A campaign larger than that daily cap needs to be split across multiple days or ZIP codes, or moved to a bulk mailing arrangement through a Business Mail Entry Unit, which has its own separate size and weight rules.