Loyal member
There isn't an official breakdown or specific data publicly available regarding the gender distribution of Tumblr users. Tumblr, like many social media platforms, does not typically disclose detailed demographic information about its user base.

However, Tumblr has historically had a diverse user community with a wide range of interests and demographics. It has been popular among various age groups, including teenagers, young adults, and niche interest communities. Tumblr's user base has included individuals of various genders, ethnicities, and backgrounds.