The woman, who appears to be smiling, rings the doorbell several times, knocks on the door and then runs back towards the street.
Originally, the identity of the woman and child were unknown.
The woman seen in the surveillance video dropped the little boy off at the wrong home.
The Montgomery County Sheriff's Office did not respond to DailyMail.com's inquiries on Thursday morning. The woman faces a charge of child abandonment.
According to The Associated Press, the boy's father lives next door to the home where the woman left the child. He hadn't been home when police first canvased the area.
According to the Montgomery County Sheriff's Office, the child's mother planned to take him to his father's, but she ended up in the hospital. "When the child did not show up at the residence the father assumed the mother of the child's plans had changed and then left the residence for the evening".
The home where she had left the child was next door to the father's residence.
Spencer said the boy was in good spirits and was placed in the custody of Child Protective Services.
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The toddler is seen standing at the door as the woman drives away in her white vehicle.
A woman left a toddler in front of a Spring home Wednesday night, and it was all captured on video. "That is a felony charge", Spencer said.
The child was not hurt.
A woman answered the door and found the child - who she says she had never seen before - and two bags, Montgomery County Sheriff's Office said.
The video shows the unnamed friend rush up to the doorstep carrying the child by his arm.
She flees, jumps into a vehicle and drives off, leaving the boy standing at the door.
The black female suspect is believed to be in mid-20s or early-30s, with long hair and tattoos on her right arm. She was caught on a Ring doorbell surveillance video.