Cookie Policy

Last updated on May 6, 2019. This Cookie Policy is effective May 18, 2019 for new members and June 1, 2019 for existing members. To review the previous policy, please click here.

This policy explains how cookies and similar technologies are used on our website and apps (together, “Nextdoor” or our “Services”). By accessing or using Nextdoor, you consent to the use of these technologies as described in this policy. Please do not use Nextdoor if you are not comfortable with the ways in which we and the third parties described below use cookies and related technologies.

What Is a Cookie?

A cookie is a small file containing a unique identifier that is placed in the web browser of your computer or mobile device when you visit a site. Cookies and similar technologies (which include pixels, tags, web beacons and software development kits (“SDKs”)) (together “cookies”) enable site operators to recognize your device and collect information from it when you interact with a site. They use this information to understand how the site is being used, remember user preferences and improve users’ browsing experience. Cookies are also used to make the advertising you see online more relevant to your interests.

Who Places Cookies on my Device? 

Cookies set by the site you visit are called “first party cookies”. Cookies set by other parties are called “third party cookies”. Third party cookies enable third party features or functionality within the site, such as site analytics, advertising and social media features. The parties that set these third party cookies can recognize your computer or device both when it visits the site in question and also when it visits certain other sites and/or apps. We do not control how these third parties use your information, which is subject to their own privacy policies. See below for details of the use of third party cookies and similar technologies on Nextdoor.

What Cookies Does Nextdoor Use, and Why?

Nextdoor uses both session cookies and persistent cookies:

  • We use a session cookie to identify you during a particular visit to Nextdoor. Session cookies expire after a short time, or when you close your web browser or app after using Nextdoor.
  • We use a persistent cookie to identify you over a long period of time. (For example, if you asked us to keep you signed in, we would use a persistent cookie for that purpose.) Persistent cookies remain on your device for a set period of time specified in the cookie.

We use both first and third party cookies to operate, understand and improve Nextdoor, specifically:

  • To authenticate you and secure our Services: We use cookies to monitor login, session and status data. This allows us to know, for example, whether you are logged in.
  • To remember your settings and preferences: We use cookies to recognize your browser and remember your preferences. For example, we use cookies to remember your language preferences.
  • To carry out analytics and research: We use cookies to understand your use of Nextdoor and how we can improve our offerings. For example, we use cookies to track whether you open emails we send you.
  • To personalize your experience: We use cookies to personalize your use of Nextdoor, including to serve you personalized advertising that may better suit your needs.
  • To detect fraud, trust and safety, and investigations:  We use cookies to keep the Services safe, including to detect and prevent fraud and conduct investigations.

What Third-Party Cookies are Used on Nextdoor?

A number of third party cookies are set on Nextdoor, some of which depend on how you use our Services. These cookies, the third parties that set them, the purposes of such cookies and the means by which you can opt out, are listed in the table further below. In general, the following types of third party cookies may be set when you use Nextdoor:  

  • Facebook: If you register or sign in using Facebook, a Facebook cookie is set to help track your log-in.
  • Google Analytics: We use Google Analytics, including Google Analytics cookies, to collect anonymous traffic data to help us analyze how members and visitors access and use Nextdoor, and for other Analytics services relating to website activity and internet usage. Learn about how Google uses data from Google Analytics and how to opt out from Google Analytics by following the links in the table below.
  • Advertising Cookies: The Services allow third party advertising companies that we work with to use cookies and similar technologies to collect information about how you use Nextdoor and other sites and services over time. These companies use the information they collect to show you ads they believe will be relevant to you on Nextdoor and elsewhere, and to measure how the ads perform.  
  • Third-Party Cookies From Content Shared By Members: Nextdoor members may share content on Nextdoor that originates from a third-party website or service, and that third-party website or service may set its own cookies when you interact with that content. For example, if a member posts a video from YouTube on Nextdoor, YouTube may set a cookie when you click to watch the video.
  • Pixels: Our advertising partners may use pixels or similar technology to measure the success of the sponsored posts or other advertising products they use. A “pixel” (also sometimes called web beacon, or clear GIF) is a tiny piece of code, invisible to the user, placed on a webpage or in an email and used in combination with a cookie, to link a given activity or impression back to the user; the advertiser includes it in its content so it can measure whether our members interact with that content (for example, by clicking to view an offer). We may set our own pixel on an advertiser’s website so we can measure whether our members found the advertiser’s content effective or interesting, by determining whether the sponsored post prompted members to take advantage of the advertised offer. This information helps us assess whether sponsored posts and other advertising offers are relevant and interesting to our members and successful for the advertiser.
  • SDKs: We and our partners and service providers include SDKs in the Nextdoor apps. SDKs operate like cookies and allow us to understand how our app is used and what actions occur in relation to the app, including when a member signs up or logs in. SDKs are also used for advertising purposes including for measurement, personalization and to create similar audiences to advertise to.

Table of Third Party Cookies

Third PartyThird Party Privacy Policy
PurposeYour Choices
AppNexusAppNexus Privacy PolicyAdvertising served and measured by AppNexus ad exchangeAppNexus Opt Out
FacebookFacebook Privacy PolicyAdvertising served and measured by Facebook Audience NetworkFacebook Opt Out
TripleliftTriplelift Privacy PolicyAdvertising served and measured by Triplelift Ad ExchangeTriplelift Opt Out
GoogleGoogle Privacy PolicyAdvertising served and measured by Google Ad Manager and Google Marketing PlatformGoogle Opt Out
Google AnalyticsGoogle Privacy PolicyAnalysis of Nextdoor usage patternsGoogle Analytics Opt Out

Your choices

    • Browsers. You may refuse or restrict the use of cookies by selecting the appropriate settings in your browser. However, limiting or refusing cookies may affect your ability to use Nextdoor. Please note that our systems are not configured to accept browsers’ Do Not Track signals, because no industry standard for handling them has been adopted. For more information about cookies, including how to see what cookies have been set on your computer or mobile device and how to manage and delete them, visit Some advertising networks offer you a way to opt out of targeted advertising. For more information, please visit the Digital Advertising Alliance at or the Network Advertising Initiative at (for US members) or the European Digital Advertising Alliance at (for EU members).
    • Mobile Apps. Your mobile device may include a feature that allows you to opt out of some types of targeted advertising, such as the “limit ad tracking” option in your iOS or Android device’s privacy settings. Visit the Network Advertising Initiative’s mobile choices page for more information. The Digital Advertising Alliance also provides a mobile app called AppChoices that lets you opt out of interest based advertising from participating advertisers.
    • Third Parties. Please refer to the opt outs listed in the table above to specifically opt out from certain third party cookies. Since we do not control any of these opt-out links, we are not responsible for the availability or accuracy of these mechanisms.  
    • Opting Out. Using these opt out services will not prevent you from seeing all ads but may make the ads you do see less relevant to you.

Changes to This Policy

Our business changes constantly and our cookie policy will also change, so please review it frequently. We will notify you of any changes by posting the updated policy on this page with its effective date. If the change is material, we will take reasonable steps to notify you in advance.


For more information about how we collect, use and share your information, see our Privacy Policy. If you have any questions about our use of cookies, please contact us online or at You can also reach us at the address listed in our Privacy Policy.