We’ve seen the Instagram community grow from 1 million to over 15 million users in 2011. To celebrate, we’re recapping the year’s activity in our Year in Review series.

January

New Year’s Eve

February

Super Bowl XLV

March

Japan Earthquake & Tsunami

April

The Royal Wedding

May

Worldwide InstaMeet

Osama bin Laden killed during American military operation

June

NBA Finals

July

Atlantis’s Final Voyage

August

London Riots

Hurricane Irene

Burning Man

September

Remembering 9/11

Occupy Wall Street

October

Steve Jobs passes

Floods in Thailand 

2011 World Series

Worldwide InstaMeet

Halloween

November

New York City Marathon

Thanksgiving

December

U.S. formally declares end of the Iraq War

SantaCon

Photos by heyjenny, tvcameraguy, akikofujita, adamsheath, mishobaranovic, angelsm84, dkarp65, nasagoddard, jimmy32, allaneschoening, ridetherockett, nbcnews, sof_ckingcliche, ogirginc, sweathog, casey7911, lpow88, canvaspop, jcohen77, tomjoubert, whitemenace & mckochman.