Census review covering what the reverse ETL data activation platform does, its Snowflake and warehouse-native architecture, pricing, and its 2025 acquisition…
Census was built around a simple but influential idea in modern data infrastructure: once a company has invested in a cloud data warehouse and a modeling layer like dbt to clean and organize that data, the warehouse should become the operational source of truth for the rest of the business, not just a destination for analytics. Reverse ETL tools like Census took data that had already been transformed and modeled in the warehouse and synced it back out to the SaaS tools where sales, marketing, and support teams did their daily work, so that a customer's lifetime value calculated in the warehouse, for example, could show up automatically as a field on their record in Salesforce or HubSpot without an engineer building a one-off integration.
This approach let data teams define business logic once, in SQL or dbt models they already maintained for internal reporting, and reuse that same logic to power operational tools, rather than duplicating logic across dozens of point-to-point integrations or asking operational teams to trust numbers calculated separately inside each destination tool. Census layered sync scheduling, field mapping, observability, and alerting on top of this core sync mechanism, aiming to give data teams the same level of confidence and debuggability in reverse ETL pipelines that they expected from their forward ETL and transformation tooling.
In May 2025, Fivetran, one of the largest and best known data movement (ETL/ELT) companies, announced the acquisition of Census, bringing reverse ETL capability directly into a platform that had previously focused primarily on moving data into warehouses rather than back out of them. Following the acquisition, Census's product has been rebranded as Fivetran Activations and integrated into Fivetran's broader platform and billing system, meaning customers can now manage data ingestion (Connections), transformation, and activation (the reverse ETL piece formerly known as Census) under a single contract and a unified consumption-based pricing model.
The most consequential change for prospective buyers is pricing: Census's earlier flat monthly-fee plans, with its Professional tier historically starting around 350 dollars per month, have been replaced by Fivetran's Monthly Active Rows (MAR) consumption pricing, where cost scales directly with the volume of unique rows synced to destinations each month. This shift generally benefits smaller-volume users who previously might have paid a flat fee regardless of usage, while larger-scale activation workloads may see costs scale up more directly with data volume than they did under a flat-tier model. Anyone evaluating Census today should treat it functionally as Fivetran's reverse ETL module rather than an independently priced or independently operated product.
No. Fivetran acquired Census in May 2025, and the product has been rebranded as Fivetran Activations, operating as part of Fivetran's broader data platform rather than as a standalone company.
Reverse ETL is the practice of syncing data from a cloud data warehouse back out to operational business tools like a CRM or marketing platform, the inverse of traditional ETL, which pulls data from business tools into a warehouse for analysis.
Following the Fivetran acquisition, Census's reverse ETL functionality is billed under Fivetran's consumption-based Monthly Active Rows (MAR) pricing rather than its earlier flat monthly-fee plans, which had started around 350 dollars per month for the Professional tier.
Census was built to sync data from major cloud warehouses including Snowflake, BigQuery, Redshift, and Databricks, and it continues to support these as Fivetran Activations.
Yes. Census was designed to let teams sync data based directly on SQL or dbt models, reusing the same modeling logic used for analytics to power syncs into operational tools.
Census was founded in 2018 as Sutro Labs Inc. by Boris Jabes, Anton Vaynshtok, Sean Lynch, and Brad Buda, later rebranding the company and product to Census.
Census reportedly raised about 80.3 million dollars from investors including Sequoia Capital and Tiger Global Management, reaching a reported valuation of around 630 million dollars prior to its 2025 acquisition by Fivetran.
Census supported syncing warehouse data to more than 200 business tools and destinations, including Salesforce, HubSpot, Marketo, and a wide range of other sales, marketing, and customer support platforms.