Many of today's collectors started collecting U.S. postage stamps as kids, often with a parent or family member. The US stamp collecting market has weakened in recent years, however, with many stamps and even entire collections trading below face value (so many copies of common stamps were printed that there's not enough demand to warrant a premium).

Rare or unusual U.S. stamps, however, are another story - there's a robust market for those, and some specimens can be worth thousands of dollars or more.

There are many ways to approach collecting U.S. stamps. Some collectors focus on a specific time period, like the 19th century. Others choose specific themes like airmail stamps or duck stamps. Some focus on specific formats like sheets, plate blocks, coils, or booklets. There are also a large number of collectors who focus on first day covers - stamps that were affixed to a special envelope and cancelled on the first day of issue.

As with many collectibles, rarity and condition are two key determinants of value. U.S. stamps can be either unused (never cancelled) or used, and there are collectors who focus on both varieties.


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#467 Mint Original Gum Error Strip Of 12U.s. #292 Used - 1898 $1.00 Trans-mississippi ($725)#116 Used Light Black Fancy Cancel VfUs Imperf Sc # 1a 1847 5c Mint H Cat $8750Us Trans-mississippi Sc # 292 1898 $1 Mint Nh Cat $3500Nystamps Us Stamp # 244 Mint With Gum H $2150Nystamps Us Stamp # 155 Mint Og H $5500[21] Usa 1903 Scott#313 Used Cv:$700Nystamps Us Stamp # 630 Mint Og H $350Us, Wonderful Revenue & Other Bob Stamps Hinged/mounted In A Remainder Scott United States Back Of Book And Revenue Stamps, Blocks And Some Covers G230Us Pan-american Sc # 296a 1901 4c Mint H Cat $85000Nystamps Us Air Mail Stamp # C15 Mint Og Nh $975U.s. #1 Used Beauty - 1847 5c Red Brown ($375)#261 Mint Original Gum VfU.s. #291 Scarce Mint Nh W/cert - 1898 50c Trans-mississippi ($1,800)Us Trans-mississippi Sc # 293 1898 $2 Mint Nh Cat $6000Us Perf 15 Sc # 39 1857-61 90c Mint Og H W Pse CertNoblespirit No Reserve (th1) Exciting $9,000 Us Mint Treasure Trove Discovery#293 Used Black Town Cancel $2 Trans-mississippiUs Pictorial Sc # 121 1869 30c Mint Lh Cat $4500[36] Usa 1861 Scott#72b Mint No Gum Dark Blue Cv:$1,600 **nice Centering**#312 Mint Original GumUs Regular, Perf 12 Sc # 311 1902-03 $1 Mint Nh Cat $1900U.s. #573 Mint Nh Beauty - 1922 $5.00 Carmine & Blue ($200)Us Scott Sc 1 5c Franklin, UsedUs Type Iv Sc # 16 1851-57 10c Mint H Cat $37500Us Scott #39, Unused.Us Pictorial Sc # 121a 1869 30c Mint H Cat $11000Usa Stamp #388 2c Carmine 1910 Single Line Usps Wmk Mnh/og Pasteup Stip Of 4Usa # 121 30c Shield & Eagle Blue &carmine Used 1869 Cat 450us.Us Parcel Post Sc # Q12 1913 $1 Mint Nh Cat $650Csa Scott #2, UsedUs Columbian Sc # 244 1893 $4 Mint Nh Cat $7000Us 1861-69 24c Used Shade Study Complete With Steel Gray #70b Cat $28,000U.s. #c13 Mint - 1930 65c Graf Zeppelin ($190)U.s. #595 Scarce Mint Nh - 1923 2c Carmine, Rotary, P11 ($475)Nystamps Us Csa Confederate Stamp # 4 Mint With Gum H $225Confederate States 2 Rare Tennessee Pmk Huge Margins Csa StampNystamps Us Stamp # 95 Used $900 GrillUs Panama-pacific, Perf 10 Sc # 404 1914-15 10c Mint Nh Cat $1700Us Columbian Sc # 243a 1893 $3 Mint Nh Cat $4750Us Trans-mississippi Sc # 292 1898 $1 Mint Nh Cat $3500Us Parcel Post Sc # Q12 1913 $1 Mint Nh Cat $650[07] Usa 1895 Scott#278 Used Cv:$625Mr Fancy Cancel 206 210 205 Pair On 2c Envelop Registered San Fran To Berlin '86Nystamps Us Parcel Post Stamp # Q12 Mint Og H $300#78 Used Light Black Fancy Cancel VfUs Trans-mississippi Sc # 293 1898 $2 Mint Nh Cat $6000U.s. #404 Choice Mint Vf/xf - 1915 10c Pan-pacific, P10 ($700)Massachusetts Duck Stamp Print - 1976 Scott# Ma3 - Canadian Goose DecoyU.s. #524 Mint Vf - $5.00 Green & Black ($170)E10 Special Delivery 10c Mint Superb-nh Jumbo Margins Select Gem#9 Used Black Grid Cancel And Red Cancel At Bottom VfRw1 Federal Duck Stamp On 1934 Colorado Hunting License#77 Used Red Cork "son" CancelNystamps Us Air Mail Stamp # C3 Mint Og H $70Noblespirit No Reserve {jw} Superb Gem Us No C13-15 Zeppelin Mnh Xf = $1,900 CvU.s. Air Mail Stamp, Scott # C 15, UnusedU.s. #242 Unused Beauty - 1893 $2.00 Columbian ($575)