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21st Birthday Cards

Drink ... drank ... drunk? Not too much, we hope. Send a 21st Birthday Card to someone who has hit that milestone like a boss and is ready to celebrate. Choose from 790+ exceptional designs, add your personal message, and we'll mail it next business day. Throwing a party? No worries. We have 21st Birthday Party Invitations, too. Yeah, 'cause we're cool like that.

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Shopper Testimonials
“Every card I have gotten from here has been terrific. Really like how so many of them can be personalized. I have always been able to the perfect card for whatever occasion I have wanted or needed one. I have received so many compliments from the recipients.”
Pat - Oct 5th, 2026
“I have used Greeting Card Universal before and have never been disappointed. I have recommended them to my friends.”
Deborah - Mays Landing, New Jersey - Oct 4th, 2026
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Cards per Page:
Cards: 635 Pages: 22
Most Popular Newest Show adult cards
Martini with extra olives for a 21st birthday card
21st Birthday Masculine Metal and Wood Design card
Age 21, Golfing birthday card. card
21st birthday, colorful dragonflies and glassy bor…
21st Birthday with Adorable Raccoons in a Blue Fra…
Whale Of A 21st Birthday Card
21st Birthday Flower Numbers card
Happy 21st Birthday Party Cake card
Birthday 21st Fierce Dragon deep Purples and Blues…
Happy 21st Birthday - Wildflowers and Mountains ca…
21st Birthday Bright Cake Cupcakes Party Hats Ball…
Custom Name Pretty Pink Floral 21st Birthday card
21st Birthday, Pomeranian surrounded by butterflie…
21st Birthday Card Red Floral card
Happy 21st Birthday Pink Apple Blossoms and Purple…
Happy 21st Birthday with blue balloon and puzzle g…
Happy 21st Birthday written in clouds card
21st Birthday, general, Sexy fairy with magic wand…
21st Birthday, general, humor, soapy raccoon in ba…
21st Birthday, raccoon playing football on green w…
Happy 21st Birthday Nostalgic Classic Car Scene ca…
Happy 21st birthday, red heart on yellow backgroun…
21 Yrs, Happy Birthday, Styling in Black and White…
Happy 21st Birthday - Colorful Abstract card
21st Birthday Cake with Candles card
Humorous - your 21st Birthday -Holy Moly- twenty-f…
21st Birthday All Things Sporty card
21st Birthday, Happy Birthday, Mason Jar, Flowers,…
Happy 21st Birthday, Cake with 21 Candles card
Happy 21st Birthday card
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