New Rates Effective January 26, 2020 In Effect (2019) New Rate (2020)
First Class Mail Single Piece Letters (Metered)  
Weight Not Over (oz.)
1 50 cents 50 cents (no change)
2 65 cents 65 cents (no change)
3 80 cents 80 cents (no change)
3.5 95 cents 95 cents (no change)
Large Envelopes (Flats)  
Weight Not Over (oz.)
1 $1.00 $1.00 (no change)
2 $1.15 $1.20
3 $1.30 $1.40
4 $1.45 $1.60
5 $1.60 $1.80
Priority Mail Express Flat Rate-Domestic  
Flat Rate Envelope $22.50 $26.35
Legal Flat Rate Envelope $25.70 $26.50
Padded Flat Rate Envelope $26.20 $26.95
Priority Mail  
Flat Rate Envelope $7.35 $7.75
Legal Flat Rate Envelope $7.65 $8.05
Padded Flat Rate Envelope $8.00 $8.40
Small Flat Rate Box $7.90 $8.30
Medium Flat Rate Boxes $14.35 $15.05
Large Flat Rate Boxes $19.95 $21.10